Inorganic Chemistry Questions
The best high school and college tutors are just a click away, 24×7! Pick a subject, ask a question, and get a detailed, handwritten solution personalized for you in minutes. We cover Math, Physics, Chemistry & Biology.
Inorganic Chemistry
Classification of Elements and PeriodicityNaturally occurring element X exists in three isotopic forms: X-28 (27.977 amu, 92.23% abundance), X-29 (28.976 amu, 4.67% abundance), and X-30 (29.974 amu, 3.10% abundance). What is the identity of element X?
Al
Sr
Cu
Ni
Si
Inorganic Chemistry
MetallurgyWhat is the name of the compound with the formula KOH ?
What is the name of the compound with the formula NaHCO3 ?
What is the name of the compound with the formula AI(CN)3 ?
Inorganic Chemistry
Classification of Elements and Periodicitye. Choose an example of a synthesis reaction that is also an oxidation-reduction reaction, but that does not involve combustion.
2KNO3(s) → 2KNO2 (s) + O2(g)
2Fe(s) + 3Cl2 (g) → 2FeCl3 (s)
2AgNO3 (s) → 2Ag(s) + 2NO2(g) + O₂(g)
CH4 (g) +202 (g) → CO2 (g) + 2H₂O(l)
NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O(1)
C(s) + O₂(g) → CO2 (g)
Inorganic Chemistry
Qualitative analysisWhen aqueous solutions of potassium carbonate and cobalt(II) iodide are combined, solid cobalt(II) carbonate and a solution of potassium iodide are formed. The net ionic equation for this reaction is:
Inorganic Chemistry
Qualitative analysisJason set up a textile mill in his hometown in 1865. He became a rich businessman by the time his son Earl took over the business in 1895. Soon after Earl started heading the business, the government passed laws to regulate business and protect consumers and workers. Due to this move by the government, the textile mill had to introduce a fixed salary structure for its employees and implement quality checks for the products manufactured. In the context of the history of American business, Jason had set up this textile mill in the ______
Inorganic Chemistry
Classification of Elements and PeriodicityChoose the characteristic physical properties that distinguish the metallic elements from the nonmetallic elements.
(Select all that apply.)
rigid and fragile
bad conductors of electricity
bad conductors of heat
excellent conductors of electricity
generally shiny (lustrous) when a fresh surface is exposed
excellent conductors of heat
malleable and ductile
generally transparent when polished
Inorganic Chemistry
MetallurgyBalance each of the chemical reactions.
1) CuSO4 (27) + Zn (3) → ZnSO4 (aq) + Cu (s)
2) NaOH(aq) + HC1 (ag) → NaCl (ag) + H₂O (l)
3) Mg (s) + O2 (g) → MgO (s)
4) Co(NO3)2 (aq) + Na₂HPO4 (aq) → NaNO3 (qq) + CoHPO4 (s)
5) NaHCO3 (s) + HC₂H³O2 (aq) → NaC₂H³O2 (aq) + H₂O (1) + CO₂ (g)
Inorganic Chemistry
MetallurgyWhich of the following is incorrectly named?
PO43, phosphate ion
NO³-, nitrite ion
Mg(OH)2, magnesium hydroxide
Pb(NO3)2, lead(II) nitrate
NH4CIO4, ammonium perchlorate
Inorganic Chemistry
MetallurgyWhat is the name of the compound with the formula NaCIO2 ?
What is the formula of calcium hypochlorite ?
Inorganic Chemistry
Coordination compoundsA) Determine the type of each reaction (e. single replacement, etc.
1) H2(g)+C12(g) → 2HCl(g)
2) CaCO3(s) →CaO(s)+CO2)g)
3) Fe(s)+CuSO4(aq) →FeSO4(ag)+Cu(s)
4) AgNO3(aq)+NQl→ AgCl(s)++KINOS (3)
5) CH4(g)+202(g) →CO2(g)+2H2O(g)
Inorganic Chemistry
Classification of Elements and PeriodicityHow many protons and neutrons are contained in the nucleus of the isotopes below? Assuming the atoms are uncharged, how many electrons are present?
22Ti48
protons
neutrons
electrons
56fe26
protons
neutrons
electrons
Inorganic Chemistry
Qualitative analysisMany plants are poisonous because their stems and leaves contain oxalic acid, H₂C₂O4, or sodium oxalate, Na2C2O4; when ingested, these substances cause swelling of the respiratory tract and suffocation. A standard analysis for determining the amount of oxalate ion, C₂O4², in a sample is to precipitate this species as calcium oxalate, which is insoluble in water. Choose the right net ionic equation for the reaction between sodium oxalate and calcium chloride,
CaCl2, in aqueous solution.
2Ca²+ (aq) + C₂04² (aq) → Ca₂C₂O4(s)
Ca²+(aq) + C₂O4²- (aq) → CaC₂O4(s)
Ca²+ (aq) + 2C₂O4²- (aq) → Ca(C₂O4)2 (8)
Ca²+ (aq) + C₂ 04² (aq) → CaC₂O4 (aq)
Inorganic Chemistry
Preparation and Properties of CompoundsThe compound barium iodide is a strong electrolyte. Write the reaction when solid barium iodide is put into water:
Inorganic Chemistry
Classification of Elements and Periodicitya. Give the correct definition of a combustion reaction.
A combustion reaction is typically a reaction in which an element or compound reacts with so quickly and with such a large release of energy that a flame results.
b. In addition to the chemical products, what other products do combustion reactions produce?
electrons
atoms
heat energy
protons
c. Write the chemical equation for a combustion reaction of C₂H6.
(Use the lowest possible coefficients. Omit states of matter.)
Inorganic Chemistry
Qualitative analysisIdentify each of the following unbalanced reaction equations as belonging to one or more of the following categories: precipitation, acid-base, or oxidation-reduction.
(Select all that apply.)
K₂SO4 (aq) + Pb(NO3)2 (aq) → PbSO4(s) + KNO3(aq)
precipitation
acid-base
oxidation-reduction
HCl(aq) + Sr(s) → H₂(g) + SrCl₂ (aq)
precipitation
acid-base
oxidation-reduction
HCl(aq) + CsOH(aq) → H₂O(l) + CsCl(aq)
c. O precipitation
acid-base
oxidation-reduction
Inorganic Chemistry
Qualitative analysisIn the examples cited by Robert Cialdini and Steve Martin, when servers provided mints to their customers as they gave them the bill, the difference in tips from giving one mint versus two mints,
jumped from 3 percent to percent of the bill.
a. 5
b. 14
c. 6
d. 10
Inorganic Chemistry
Qualitative analysisHexamethylenediamine (C6H16N₂) is one of the starting materials for the production of nylon. It can be prepared from adipic acid (C6H10O4) by the following overall equation:
C6H10 O4 (1) 2NH3 (g) + 4H2 (9)→ C6H16N2 (1) + 4H₂O(1)
What is the percent yield for the reaction if 1.41 x 10³ g of
Percent yield =
hexamethylenediamine is made from 1.99 x 10³ g of adipic acid?
Inorganic Chemistry
Qualitative analysisA chemist prepares a solution of calcium sulfate (CaSO4) by measuring out 0.33 g of calcium sulfate nto a 250. mL volumetric flask and filling the flask to the mark with water.
Calculate the concentration in mol/L of the chemist's calcium sulfate solution. Be sure your answer has the correct number of significant digits.
Inorganic Chemistry
Preparation and Properties of CompoundsMany chromate (CrO42) salts are insoluble, and most have brilliant colors that have led to their being used as pigments. Choose the correct net ionic equation for the reaction of Ba²+ with a chromate ion.
Ba²+ (aq) + CrO42 (aq) → Ba₂ CrO4(s)
Ba²+ (aq) + CrO4² (aq) → BaCrO4 (aq)
Ba²+ (aq) + CrO4² (aq) → BaCrO4 (s)
Ba²+ (aq) + CrO4² (aq) → Ba(CrO4)2 (8)
Inorganic Chemistry
Classification of Elements and PeriodicityA compound containing only sulfur and phosphorus is 50.9% S by mass; the molar mass is 252 g/mol. What are the empirical and molecular formulas of the compound?
Empirical formula:
Molecular formula:
Inorganic Chemistry
Qualitative analysisAn unknown piece of metal weighing 68.0g at 90 °C is dropped into a calorimeter that contains 200 grams of 25 °C water. The final temperature of the is 38.3 °C. What is the 8.3°C. What is the specific heat capacity of the unknown metal?
Inorganic Chemistry
Qualitative analysisThe statement a person receives information that conflicts with their existing beliefs or attitudes, and then alters the information to coincide with those beliefs is indicative of which process?
a. Selective exposure
b. Selective retention.
c. Selective distortion
Od. Selective analysis
Inorganic Chemistry
Preparation and Properties of CompoundsDraw the electron distribution diagram for water. Begin with 1 central water molecule. Show the chemistry of each element within the central water molecule (all electron orbits, lone pair electrons, type of chemical bond, polarity/charge, and correct shape). What type of bond creates a water molecule? What type of bond holds 1 water molecule to another water molecule? Next, draw the correct number of other water molecules bonding to the central water molecule. How many other water molecules bond to a central molecule of water?
Inorganic Chemistry
F Block elementsIron oxide ores, commonly a mixture of FeO and Fe2O3, are given the general formula Fe3O4. They yield elemental iron when heated to a very high temperature with either carbon monoxide or elemental hydrogen. Balance the following equations for these processes:
Fe3O4(s) + H₂(g) → Fe(s) + H₂O(g)
Fe3O4(s) + CO(g) → Fe(s) + CO2(g)
Inorganic Chemistry
Qualitative analysisChoose the balanced equations that show how three of the common strong acids ionize to produce a hydrogen ion.
(Select all that apply.)
H₂SO4 (aq) → H+ (aq) + HSO4¯ (aq)
HCl(aq) → H+ (aq) + Cl(aq)
H₂SiO3(aq) → H+ (aq) + HSiO3(aq)
HNO3(aq) → H+ (aq) + NO3(aq)
HCIO(aq) → H+ (aq) + CIO¯(aq)
Q HClO,(aq) → H*(aq) +ClO, (aq)
Inorganic Chemistry
Classification of Elements and PeriodicityComplete the balanced equation for the reaction that produces the given salt.
(Use the lowest possible coefficients. Be sure to specify states such as (aq) or (s). If a box is not needed, leave it blank.)
a. __ + __ -> __ Rb2SO4 (aq) + __H2O (l)
a. __ + __ -> __CsNO3 (aq) + __H2O (l)
a. __ + __ -> __ RbCl (aq) + __H2O (l)
Inorganic Chemistry
Qualitative analysisIn 1987 the first substance to act as a superconductor at a temperature above that of liquid nitrogen (77 K) was discovered. The approximate formula of this substance is YBa2Cu3O7. Calculate the percent composition by mass of this material.
Inorganic Chemistry
Qualitative analysisThe following molecular equation represents the reaction that occurs when aqueous solutions of silver(I) nitrate and manganese(II) iodide are combined.
2AgNO3 (aq) + MnI₂ (aq) —2AgI (s) + Mn(NO3)2 (aq)
Write the balanced net ionic equation for the reaction.
Inorganic Chemistry
Qualitative analysisExpress the composition of each of the following compounds as the mass percents of its elements.
a. acetone, C3H6O
Mass% C =
Mass% H=
Mass% O =
b. glycerol, C3 Hg O3
Mass% C=
Mass% H =
Mass% 0 =
Inorganic Chemistry
Qualitative analysisA solution was prepared by mixing 60.00 mL of 0.100 M HNO3 and 180.00 mL of 0.200 M HNO3. Calculate the molarity of the final solution of nitric acid.
Inorganic Chemistry
D Block elementsThere are two binary compounds of mercury and oxygen. Heating either of them results in the decomposition of the compound, with oxygen gas escaping into the atmosphere while leaving a residue of pure mercury. Heating 0.3249 g of one of the compounds leaves a residue of 0.3009 g. Heating 0.2086 g of the other compound results in a mass loss of 0.008 g.
a Determine the empirical formula of the first compound. Formula:
b Determine the empirical formula of the second compound. Formula:
Inorganic Chemistry
HydrogenA 11.0 g sample of an aqueous solution of hydrochloric acid contains an unknown amount of the acid. If 11.3 mL of 2.08 M potassium hydroxide are required to neutralize the hydrochloric acid, what is the percent by mass of hydrochloric acid in the mixture?
Inorganic Chemistry
Qualitative analysisFreon-12 (CCl₂F₂) is used as a refrigerant in air conditioners and as a propellant in aerosol cans. alculate the number of molecules of Freon-12 in 5.90 mg of Freon-
What is the mass of chlorine in 5.90 mg of Freon-12?
Inorganic Chemistry
Classification of Elements and PeriodicityA compound is found to contain 34.60 % chlorine, 46.85 % oxygen, and 18.55 % fluorine by mass.
The empirical formula for this compound is
The molar mass for this compound is 102.5 g/mol.
The molecular formula for this compound is
Inorganic Chemistry
Qualitative analysisNickel (Ni) is a metal that is added to steel to improve its resistance to corrosion. Calculate both the number of moles in a sample of nickel containing 8.39 × 10^20 atoms and the mass of the sample.
Inorganic Chemistry
Classification of Elements and PeriodicityAn element consists of 0.19% of an isotope with mass 135.907 u, 0.25% of an isotope with mass 137.9060 u, 88.45% of an isotope with mass 139.9054 u, and 11.11% of an isotope with mass 141.9092 u. Calculate the average atomic mass, and identify the element.
Inorganic Chemistry
Qualitative analysisThe next step is to see if an insoluble product can form from the ions available. We do this by xchanging or "crossing" the ions in the reactants. This gives Ag2CO3 and KNO3. Are either of these insoluble?
Ag¹(aq) + NO3 ¯(aq) + K*(aq) + CO3 ²¯(aq) →
(Select all that apply.)
KNO3
Ag2CO3
Inorganic Chemistry
Preparation and Properties of CompoundsWrite the balanced formula equation for the acid-base reactions that occur when the following are mixed.
(Use the lowest possible coefficients. Be sure to specify states such as (aq) or (s). If a box is not needed, leave it blank.)
a aqueous barium hydroxide and nitric acid
Inorganic Chemistry
Qualitative analysisWhich of the statements below is NOT part of the scientific method?
observation and measurement
testing of a hypothesis by experimentation
refinement of a hypothesis as needed
formation of a hypothesis
All of the above steps are part of the scientific method.
Inorganic Chemistry
Qualitative analysisWhat volume of 0.100 M Na3PO4 is required to precipitate all the lead(II) ions from 200.0 mL of 0.400 M Pb(NO3)2?
Inorganic Chemistry
Qualitative analysisSi Br(l) + 2Ba(s) → 2BaBr₂ (s) + Si(s)
Reducing Agent Substance Oxidized Substance Reduced
Be(OH)2 (aq) → BeO₂ (aq) + 2H₂O(1)
Oxidizing Agent
Reducing Agent Substance Oxidized Substance Reduced
Inorganic Chemistry
Qualitative analysisWhat volume of each of the following acids will react completely with 50.00 mL of 0.100 M NaOH?
a. 0.150 M HCl
Volume =
b. 0.250 M HNO3
Volume =
mL
Volume =
mL
c. 0.100 M HC₂H3 O₂ (1 acidic hydrogen)
mL
Inorganic Chemistry
Preparation and Properties of CompoundsWhat number of Ti atoms and what amount (moles) of Ti atoms are in 100.0 g of titanium?
Inorganic Chemistry
P Block - Group 13A 10.00-mL sample of vinegar, an aqueous solution of acetic acid (HC₂H3O2), is titrated with 0.5502 M NaOH, and 20.00 mL is required to reach the equivalence point.
a. What is the molarity of the acetic acid?
b. If the density of the vinegar is 1.006 g/cm³, what is the mass percent of acetic acid in the vinegar?
Inorganic Chemistry
MetallurgyCategorize the following statement as observation, law, or theory:
The mass of a gas that will dissolve in a liquid is directly proportional to the pressure of the gas.
observation
law
theory
Inorganic Chemistry
HydrogenThe equation for the production of methane is
C + 2H₂(g) → CH4(g). How many grams of hydrogen are needed to produce 44.8 liters of methane at 273 K and 760 mm Hg?
a. 2.0 g
b. 4.0 g
c. 6.0 g
d. 8.0 g
e. 89.6
Inorganic Chemistry
Qualitative analysisSalespeople often deal with hundreds of different people and firms over time is indicative of which reason to choose a career in sales.
a. Freedom
b. Job challenge
c. Rewards
d. Opportunities of advancement
Inorganic Chemistry
Preparation and Properties of CompoundsIn the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced, the oxidizing agent and the reducing agent.
name of the element oxidized:
3N₂H₂ + 2Cr+ 6H₂O →ONH3 + 2Cr(OH)3
formula of the oxidizing agent:
name of the element reduced:
formula of the reducing agent:
Inorganic Chemistry
Qualitative analysisWrite the net ionic equation for the precipitation of magnesium sulfide from aqueous solution.
Inorganic Chemistry
Classification of Elements and PeriodicityWrite the net ionic equation for the following molecular equation.
Ag₂SO4(aq) + (NH4)2CO3(aq) → Ag₂CO3(s) + (NH4)2SO4(aq)