Organic Chemistry Questions

What is the oxidation number for carbon in the ionic compound potassium carbonate (K₂CO3)? -6 +4 -4 +3

Which of the following statements about electrochemical cells is true? Only oxidation half-reactions are useful Oxidation occurs at the anode Reduction occurs at the anode An element with a strong attraction to electrons will be easily oxidized

M/Ch. In a hydration reaction, an alkene is converted to what type of compound? an alkyne an alcohol an amide an aldehyde

Which species is oxidized in the following reaction? 2Hg²+ + N₂H4 → 2Hg + N₂ + 4H This is a reduction reaction not an oxidation reaction Nitrogen Hydrogen Mercury

Which of the following statements is true about redox reactions? Oxidation reactions always occur with reduction reactions because if one element is losing electrons, another has to be gaining them. An oxidizing agent is a species that is reduced. An atom is reduced when it gains electrons. All of the above are true.

Classify the electron donating group as one of the following. Weak base - Poor nucleophile Weak base - Good nucleophile Strong base - Good nucleophile Strong base Poor nucleophile

What are the intermolecular forces experienced by the interaction of the following molecules? NH3 and C6H6 (benzene) only dispersion forces dipole-induced dipole forces and dispersion forces ion-induced dipole forces and dispersion foces dipole-dipole and dispersion forces

Using the following activity series of metals, which of the listed metal ions would be replaced if combined with copper metal in a single replacement reaction? a. Lead b. Platinum c. Cadmium d. Strontium

When (1R,2R,4S)-2-bromo-4-isopropyl-1- methylcyclohexane is reacted with sodium ethoxide only one product forms. Which alkene is it? (Chair conformations provided as a guide.) Product 1) Product 2)

On the basis of their electron configurations, predict the formula of the simple binary ionic compounds likely to form when the following pairs of elements reacts with each other. a. aluminum, Al, and selenium, Se: b. magnesium, Mg, and oxygen, O: c. lithium, Li, and arsenic, As:

Identify the best reagents to achieve the following transformation: 1. conc. H₂SO4, heat; 2. HBr, ROOR 1. NaOEt; 2. HBr, ROOR; 3. t-BuOK 1. NaOEt; 2. BH3 THF; 3. NaOH, H₂O2 1. conc. H₂SO4, heat; 2. HBr

BaCO3 + 2HNO3 → Ba(NO3)2 + CO₂ + H₂O What mass of barium nitrate can be formed by the reaction between 75.0 g barium carbonate and 35.00 g nitric acid? Then calculate how much excess reactant is left over.

Metal Specific Heat (J/g°C) Calcium 0.647 Iron 0.449 Silver 0.235 Gold 0.129 Ten grams of all four substances above are pulled from the same container of hot oil with a temperature of 250°C. Determine which substance will cool off fastest and explain how you know.

Write balanced equations for the ionization of each of the following carboxylic acids in water. acetic acid

It required 66.66 mL of 2.000 M Al(OH)3 to titrate (neutralize) 100.00 mL of an HBrO3 solution. What is the molarity. M, of the HBrO3 solution? 3 HBrO3+ Al(OH)3 --> 3 H₂O + Al(BrO3)3 A. 0.4000 M B. 1.333 M C. 2.000 M D. 4.000 M

Which of the following statements is (are) true for the compound (R)-2-butanol? A) This compound is chiral. B) This compound is optically active. C) This compound has an enantiomer D) all of the above E) none of the above

In an alkane series of hydrocarbons, as the number of carbon atoms increases in a chain, the normal boiling point of each successive molecule - increases decreases remains the same

Give the products for each of the following processes Drag the appropriate items to their respective bins. Product of hydrogenation palmitic acid Br₂ 0₂ alkane Product of hydrolysis glycerol the potassium salts of the fatty acids Product of saponification ethylene glycol Not a product of these reactions Reset

A compound is found to contain 45.71 % oxygen and 54.29 % fluorine by mass. What is the empirical formula for this compound?

The saponification of an ester produced isopropanol and sodum octanoate. What ester underwent hydrolysis to give these products View Available Hint(s) isopropyl octanoate Isopropyl octanol isopropyl octanoic acid) octyl isopropanoate

A compound is found to contain 6.360 % silicon, 36.18 % bromine, and 57.46 % iodine by mass. What is the empirical formula for this compound? To answer the question, enter the elements in the order presented above.

Enter your answer in the provided box. How many degrees of unsaturation are present in C8H₂CIO? degrees of unsaturation

What is the total number of oxygen atoms present in Mg(CIO3)2? 2 6 3 5

Show the calculation of osmolarity for each of the following solutions. 3 points a. 0.75 M magnesium nitrate solution has osmolarity of b. 1.5 M sucrose solution has an osmolarity of c. 0.952 moles of a copper (II) chloride in 806 mL of water has an osmolarity of

25.0 g of HI(g) is injected into a 4.00 L reaction vessel that contains 20.0 g of l₂(g). When the system comes to equilibrium at 400°C, what will be the total pressure inside the reaction vessel? 2HI(g) H₂(g) + 12(g), K = 0.0156 at 400°C a 2.43 atm b. 3.78 atm c.0.815 atm d. 2.70 atm e. 13.0 atm

1,2-Dichloropentane reacts with excess sodium amide in liquid ammonia (followed by water workup) to produce compound X. Com- pound X undergoes acid-catalyzed hydration to produce a ketone. Draw the structure of the ketone produced upon hydration of com- pound X.

Increasing pressure speeds up the rate of a chemical reaction because particles are compacted in a smaller volume, therefore increasing particle collisions. Pressure only affects which phase? aqueous gas liquid solid

Look at the formula for the Heat of Reaction (ΔH). ΔH is equal to the - heat content of reactants minus the heat content of the products Hydrogen reactants minus the Hydrogen products heat content of the products minus the heat content of the reactants Hydrogen products minus the Hydrogen the reactants K

How does a catalyst alter a potential energy diagram? it decreases the required activation energy it decreases the heat of products it decreases the heat of reaction it decreases the heat of reactants

Given the reaction at equilibrium: NaCl(s) <--> Na+ (aq) + Cl-¹ (ag) The addition of KCI to this system will cause a shift in the equilibrium to the right, and the concentration of Na+(aq) ions will decrease right, and the concentration of Na+(aq) ions will increase left, and the concentration of Na+(aq) ions will increase left, and the concentration of Na+(aq) ions will decrease

Enter the balanced chemical equation for the reaction of each of the following carboxylic acids with KOH 3-methylpentanoic acid (CH₂CH₂CH(CH3)CH₂COOH) Express your answer as a chemical equation. Assume that there is no dissociation (.e., enter only whole compounds, not i

Apply the Pauli exclusion principle. (a) Indicate which orbitals in the following list fill before the 4p orbitals. 3d _4s _4d_ 5s (b) What is the maximum number of electrons in the 4f subshell? (c) An electron in an orbital has the following quantum numbers: n = 3, l = 2, m₁ = 0, and ms = +1/2. Identify the type of orbital. What is the direction of the electron spin?

Estimate A proton's mass is estimated to be 1.6726 × 10-24 g, and the mass of an electron is estimated to be 9.1093 × 10-28 g. How many times larger is the mass of a proton compared to the mass of an electron?

Calculate ΔH for the reaction: C₂H4 (g) + H₂ (g) → C₂H6 (g), from the following data. C₂H4 (g) +3O₂ (g) → 2 CO₂ (g) + 2 H₂O (l) C2H6 (g) + 3 1/2O, (g) → 2 CO2 (g)+ 3 H2O (l) H₂(g) + 1/2O₂(g) → H₂O (l)

Identify the compound in the following group that is most soluble in water Rank compounds from most soluble in water to least soluble in water. To rank items as equivalent, overlap them. hexane pentanoic acid 1-octanol

If CO₂ is being produced in the solution at a faster rate than H₂CO3, then the rate of the reaction is faster than the rate of the reaction. a. forward / reverse b. reverse / forward c. neither A nor B is correct

In water, HF dissociates partially in water according to the reaction HF + H₂O → H3O* + F. I would classify this compound as a: Weak acid Weak base Strong acid Strong base

A mixture of equal amounts of two enantiomers A) is called a racemic mixture B) is optically inactive A) is called a C) implies that the enantiomers are meso forms D) both A and B E) none of the above

Choose the correct agent in each of these reactions: Mg(s) + O2(g) → MgO Select the oxidizing agent: CuO (s) + H2(g) →→ Cu(s) + H₂O(g) Select the reducing agent: 2 Na(s) + Cl2(g) →→→ NaCl(s) Select the reducing agent:

What is the ratio of the average rate of effusion of NOF(g) to that of HBr(g) at 400 K? YOU MUST WRITE THE CALCULATION FOR FULL CREDIT 81:49 The average rate of effusion is the same for the two gases. 7:9 9:7 49:81

Photosynthesis uses 670-nm light to convert CO₂ and H₂O into glucose and O₂. Calculate the frequency of this light. Frequency: Hz

You just discovered a new element who has similar properties as Oxygen. Which of the following would be TRUE? The element is Joke and the symbol is Jo. Jo²+ The ion would be Joke ion. Jo²- It is a transition metal. Jo+

Sodium hydroxide, NaOH, is a strong base that is used in industrial synthesis and processes such as making paper. What is the mass of 2.30×1022 formula units of NaOH (Molar mass = 40.0 g/mol)? Express the mass in grams to three significant figures.

How will the presence or absence of the NH4+ ion be detected in fertilizer? Add hydrochloric acid (HCI) and look for a color change with red litmus paper. Add hydrochloric acid (HCI), followed by BaCl₂ and look for the formation of a white precipitate. Add silver nitrate (AgNO3) and look for a white precipitate. Add sodium hydroxide (NaOH) and look for a color change with red litmus paper. Add hydrochloric acid (HCI) and look for the presence of bubbles.

A chemist must dilute 92.8 mL of 14.1 mM aqueous calcium sulfate (CaSO4) solution until the concentration falls to 3.00 mM. She'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final volume, in liters. Round your answer to 3 significant digits.

In the following reactions, indicate if the species is oxidized or reduced Mg2+ becomes Mg O becomes O²- Fe2+ becomes Fe³+ F becomes F- Cu becomes Cu+ H becomes H+

Match each of these acids or bases to their corresponding conjugate acid or base. H3PO4 ⇒ CH3COOH → H₂CO3 ⇒ OH ⇒> CN ⇒ PO4³-

For each chemically-distinct set of protons in the following molecule, predict its a) relative integration, b) splitting pattern, and c) chemical shift (for example: 2H triplet @ 7.5 ppm).

How many moles of water, H₂O, contain 2.0 x 1022 molecules of water? (See the hints for assistance in interpreting scientific notation.) Express the quantity in moles to two significant figures.

Ascorbic acid, or vitamin C (C6H806, molar mass = 176 g/mol), is a naturally occurring organic compound with antioxidant properties. A healthy adult's daily requirement of vitamin C is 70-90 mg. A sweet lime contains 2.86×10-4 mol of ascorbic acid. To determine whether the ascorbic acid in a sweet lime meets the daily requirement, calculate the mass of ascorbic acid in 2.86×10-4 mol of ascorbic acid. Express the mass in grams to three significant figures.