Coordination compounds Questions and Answers

For the following coordination complex: (Ni(NO₂)₂Br₂)^-2 Give the name Determine the geometry Give the coordination number of the central cation State which type if geometric isomers are present (if none are present, write "none")

In the series of Werner complexes (after the German-Swiss chemist) [CoX(NH3)5]n* with X = I™, CI', NH3, there is a color variation from purple (1), through pink (CI) to yellow (NH3). Explain this observation.

Select the correct meaning of the term 'chemiluminesence' from the list below. 1. A chemical reaction where an excited state is formed, releasing energy in the form of a photon of light on relaxation. 2. The release of light by a chemical reaction within a living organism. 3. An excited state is formed by the absorption of electromagnetic radiation, which rapidly relaxes to release energy in the form of a photon of light. 4. An excited state is formed by the absorption of electromagnetic radiation, which slowly relaxes to release energy in the form of a photon of light.

Balance the following equation in standard form and determine the sum of the coefficients. LIAIH4(s) + AICI3(s) →AIH3(s) + LiCl(s) 8 9 10 11 12

Calculate the Normality of a solution that is prepared by dissolving 37 g of Ca(OH)2 in 375 ml solution.

The density of a sample of NH3(g) at a pressure of 1.00 atm is 0.870 g/L. What is the root- mean-square speed (in m/s) of the molecules in this sample?

The reaction of a monosaccharide to form a disaccharide is an example of which of the following reactions? hydrolysis condensation oxidation reduction addition

An unsaturated fatty acid is converted to a saturated fatty acid in the presence of hydrogen (H₂) and a catalyst. Identify the type of reaction. Hydrolysis Hydrogenation Saponification Esterification I DON'T KNOW YET

Which of the following statements are true of acids and/or bases. Select all that apply. Bases have a sour taste. Acids have a sour taste. Bases generate H+ ions in water. Acids generate H+ ions in water. Ammonia is a common acid An Arrhenius base generates protons in water.

Using complete subshell notation, match the each the predicted electron configuration of following atoms. Si Tb Te Fe N a. 1s²2s²2p63s²3p64s²3d¹04p65s²4d105p66s²4f⁹ b. 1s²2s²2p63s²3p² c. 1s²2s²2p³ d. 1s²2s²2p63s²3p64s²3d¹04p65s²4d105p4 e. 1s²2s²2p63s²3p63d6

When the following equation is balanced properly under acidic conditions, what are the coefficients of the species shown? I2 + Pb2+ ---> IO3- + Pb Water appears in the balanced equation as a (reactant, product, neither) with a coefficient of 0 for neither.) How many electrons are transferred in this reaction?

Draw the Lewis structure for NF3 in the window below and then answer the question Do not include overall ion charges or formal charges in your drawing. What is the electron-pair geometry for N in NF3 ? What is the the shape (molecular geometry) of NF3?

A molecule of Co (CN) 3 (CI)3 exists as both a fac- and mer- isomer which both exhibit unique properties such as color and melting point. a. Draw the lewis structures for both the mer- and fac-isomers of Co(CN)3(CI)3 and label. Additionally identify and label if each structure is either achiral or chiral. b. Identify the point group of each isomer Fac= Mer=

Aluminium chloride exists as a dimer, Al2Cl6 in solid state as well as in solution of non-polar solvents such as benzene. When dissolved in water it gives:

A 32.9 mL sample of Ba(OH), is titrated with HCl. If 37.2 mL of 0.863 M HCl is needed to reach the endpoint, what is the concentration (M) of the Ba(OH), solution? Ba(OH)₂ (aq) + 2 HCl(aq) → BaCl(aq) + 2 H₂O(l) 0.382 M 0.488 M 0.976 M 1.95 M I DON'T KNOW YET

Consider the following fictional element and polyatomic ions: Tb = tiberium (a "complex" transition metal, i.e. forms type II ionic compounds) TbO2- = tiberite TbO3- = tiberate What would be the name of the following compounds: Tbo tiberium (II) HTbO3 HTbO2 HTbO

A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile's engine cooling system. If a car's cooling system holds 4.90 gal, what is the boiling point of the solution? For the calculation, assume that at normal filling conditions, the densities of engine coolant and water are 1.11 g/mL and 0.998 g/mL respectively. Also, assume that the engine coolant is pure ethylene glycol (HOCH, CH₂OH), which is non-ionizing and non-volatile, and that the pressure remains constant at 1.00 atm. The boiling-point elevation constant for water will also be needed.

Greenhouse gases Greenhouse gases allow visible light to pass through and warm the Earth's surface, and also allow heat energy to radiate back out into space. Greenhouse gases prevent visible light from passing through and cooling the Earth's surface, and prevent heat energy from radiating back out into space. Greenhouse gases allow visible light to pass through and cool the Earth's surface, and prevent heat energy from radiating back out into space. Greenhouse gases prevent visible light from passing through and warming the Earth's surface, and prevent heat energy from radiating back out into space. Greenhouse gases allow visible light to pass through and warm the Earth's surface, and prevent heat energy from radiating back out into space.

Calculate the concentration of H3O* in a solution that contains 5.5 x 10-5 M OH at 25°C. Identify the solution as acidic, basic, or neutral. 1.8 x 10^-10 M, basic 9.2 x 10^-1 M, acidic 9.2 x 10^-1 M, basic 5.5 x 10^-10 M, neutral 1.8 x 10^-10 M, acidic

If you were writing an electron configuration for a bromine atom, which elemental symbol would you place in the bracket? Kr Xe Ar Ne He

A bottling company uses a filling machine to fill plastic bottles with a popular cola. The bottles are supposed to contain 300 milliliters (ml). In fact, the contents vary according to some normal distribution with mean u = 298 ml and standard deviation o=3ml. a. What is the probability that the mean content of the bottles in a 36-pack is greater than 297.5ml? b. What is the probability that the mean content of the bottles in a 36-pack is between 297.5 ml and 298.5 ml?

Use bond energies to predict ΔH for the following reaction: CH4 (9) + 4F2 (g) → CF4(g) + 4HF (g)

What is the electron-pair geometry for P in PCl5 What is the the shape (molecular geometry) of PC5?

A. What is the hybridization of the central atom in IF5? Hybridization = What are the approximate bond angles in this substance ? Bond angles = B. What is the hybridization of the central atom in SF4? Hybridization = What are the approximate bond angles in this substance ? Bond angles =

A. What is the hybridization of the central atom in ICl5? Hybridization = What are the approximate bond angles in this substance ? Bond angles = B. What is the hybridization of the central atom in XeF₂? Hybridization = What are the approximate bond angles in this substance? Bond angles =

A. What is the hybridization of the central atom in SF4? Hybridization = What are the approximate bond angles in this substance ? Bond angles = B. What is the hybridization of the central atom in BrF5? Hybridization = What are the approximate bond angles in this substance ? Bond angles =

A) 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)

Four identical Erlenmeyer flasks contain different gases at the same temperature and pressure, which of the following will have the greatest density a. hydrogen b. helium C. oxygen d. carbon dioxide e. all the same

For the coordination compound [Ni(H₂O)4]I2, the number of unpaired electrons and magnetism would be 0 and paramagnetic 0 and diamagnetic 2 and diamagnetic 4 and paramagnetic 4 and diamagnetic 2 and paramagnetic

An aqueous solution of Fe(SCN)2+ is red because A. the complex adds red radiation to the solvent. B. the complex absorbs the green component from the incoming white radiation and transmits the red component. C. the solution absorbs the red component of the incoming white radiation. D. the green component, which is the complementary color of red, of the incoming white radiation is transmitted.

CuSO4(aq.) + KCN (excess)→→→→ complex of Cu. Among the following statements. (a) Oxidation states of Cu is +2 (b) The complex is colourless (c) The complex is water soluble (d) The complex is square planar The correct statement(s) is/are a, b, c only b, c only b, c, d only a, b, d only

Balanced chemical equation 2 C8H18(g) + 25 O2(g) →16 CO2(g) + 18 H2O(g) After the reaction, how much octane is left? Express your answer with the appropriate units. moles of C8H18 remaining =

Malachite is a green colored mineral that is 57.5% copper. What mass of copper is present in a 250.0 g sample of malachite? 63.6 g 127 g 435 g 36.5 g 144 g

A sample of carbon dioxide gas at a pressure of 903 mm Hg and a temperature of 49 °C, occupies a volume of 9.34 liters. If the gas is heated at constant pressure to a temperature of 91 °C, the volume of the gas sample will be L.

The molecule [CuF6]K4 has a unique structure (due to jahn-teller distortion) where it has an elongated z-axis in the octahedral structure which changes its point group from Oh to D4h. Answer the following questions related to elongated structure of [CuF6]K4. a. The oxidation state of Cu: ___and F: ___ b. Calculate the total number of electrons for [CuF6]4-: ____

How many grams of Maple Syrup are required to make 75 cookies? A. 800 g B. 1700 g C. 3310 g D. 900 g