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General Chemistry problems

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1. The relationship between the rate constants for the forward and reverse reactions and the equilibrium constant for a process is K = ____________.

a. kf/kr
b. kfkr
c. kf+kr
d. kf-kr
e. 1/(kfkr)

2. Consider the following equilibrium.
2 SO2(g) + O2(g) 2 SO3(g)
From which of the following starting conditions would it be
impossible for this equilibrium to be achieved?

a. 0.25 mol SO2(g) and 0.25 mol O2(g) in a 1.0-L container
b. Equilibrium can be achieved from any of these starting conditions.
c. 0.75 mol SO2(g) in a 1.0-L container
d. 1.0 mol SO3(g) in a 1.0-L container.
e. 0.50 mol O2(g) and 0.50 mol SO3(g) in a 1.0-L container

3. The equilibrium constant for reaction (1) below is 4.22 x 10-3. The value of the equilibrium constant for reaction (2) is
(1) 3 A + 2 B 2 D + E
(2) 2 D + E 3 A + 2 B

a. 5.78 x 10-2
b. 237
c. The value of K2 cannot be determined from the data given.
d. 1.78 x 10-5
e. 4.22 x 10-3

4. The equilibrium constant for reaction (1) is K. What is the equilibrium constant for equation (2)?
(1) SO2(g) + 1/2O2(g) SO3(g)
(2) 2SO3(g) 2SO2(g) + O2(g)

a. 1/2K
b. 1/K2
c. 2K
d. -k2
e. K2

5. The equilibrium constant for reaction (1) is K. What is the equilibrium constant for equation (2)?
(1) (1/3)N2(g) + H2(g) (2/3)NH3(g)
(2) 2NH3(g) N2(g) + 3H2(g)

a. K3
b. 1/K3
c. K/3
d. -k3
e. 3K

6. The concentration (mol/L) of a pure substance in its pure liquid or pure solid phase is given by _______.
a. (molar volume)(molecular weight)
b. (mass)(specific gravity)
c. density divided by molar mass
d (Avogadro's number)(specific volume)
e. molar mass divided by density

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Solution Preview

1.A - See

2. C - Because the existence of only SO2 do not suffice enough substance for the reaction to take ...

Solution Summary

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Assorted General Chemistry Problems

1) List the following gases in order of increasing root-mean-square speed, all at the same temperature: H2, He, O2, Ne

2) Under what conditions of pressure and temperature is a real gas most expected to deviate from ideal gas behaviour?

3) What intermolecular interactions would be the strongest between molecules CH2Cl2?

4) List the following substances in order of increasing boiling point: H2O, H2S, H2Se, H2Te.

5) List the following compounds in order of increasing vapour pressure at 298K: pentane (C5H10), ethanol (C2H5OH), water (H2O)

6) Give one example of a molecular solid.

7) The Henry's Law constant for CO2 is 3.1X10^-2 molL^-1 atm^-1 at 298K. What is the concentration of dissolved CO2 in water exposed to an atmosphere of pure CO2 at 2.0atm? Report your answer to two significant figures.

8) What is the molarity of a solution prepared by dissolving 6.21g of glucose (C6H12O6) in 1.50L of water. Report your answer to the correct number of significant figures.

9) List the following solutions in order of increasing freezing points: 0.1 m NaCl(aq), 0.1 m MgCl2(aq), 0.1 m glucose.

10) Define internal energy and enthalpy. What is the difference between the two?

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