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Propionic acid, CH3CH2COOH, is 0.42% ionized in 0.80 M solution. The Ka for this acid is ( )

A. 1.42 ´ 10-5
B. 1.42 ´ 10-7
C. 1.77 ´ 10-5
D. 6.15 ´ 104

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The following data are given at 1000 K: CO(g) + H2O(g) « CO2(g) + H2(g), DHo = -42 kJ, Kc = 0.66. After an initial equilibrium is established in a 1.00 L container, the equilibrium amount of H2 can be increased by ( )

A. adding a catalyst
B. increasing the temperature
C. transferring the mixture to a 10.0 L container
D. in some way other than (a), (b), or (c).

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If traveling at equal speeds, which of the following matter waves has the longest wavelength? ( )

A. electron
B. proton
C. neutron
D. a particle

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The standard enthalpy of formation for glucose [C6H12O6(s)] is -1273.3 kJ/mol. What is the correct formation equation corresponding to this DHof ? ( )

A. 6C(s, graphite) + 6H2O(g) ® C6H12O6(s, glucose)
B. 6C(s, graphite) + 6H2O(l) ® C6H12O6(s, glucose)
C. 6C(s, graphite) + 6H2(l) + 3O2(l) ® C6H12O6(s, glucose)
D. 6C(s, graphite) + 6H2(g) + 3O2(g) ® C6H12O6(s, glucose)

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DU = 100 J is for a system that gives off 100 J of heat and ( )

A. does no work
B. does 200 J of work
C. has 100 J of work done on it
D. has 200 J of work done on it.

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Propionic acid, CH3CH2COOH, is 0.42% ionized in 0.80 M solution. The Ka for this acid is ( )

A. 1.42 ´ 10-5 B. 1.42 ´ 10-7 C. 1.77 ´ 10-5 D. 6.15 ´ 104

The following data are given at 1000 K: CO(g) + H2O(g) « CO2(g) + H2(g), DHo = -42 kJ, Kc = 0.66. After an initial equilibrium is established in a 1.00 L container, the equilibrium amount of H2 can be increased by ( )

If traveling at equal speeds, which of the following matter waves has the longest wavelength? ( )

The standard enthalpy of formation for glucose [C6H12O6(s)] is -1273.3 kJ/mol. What is the correct formation equation corresponding to this DHof ? ( )

DU = 100 J is for a system that gives off 100 J of heat and ( )

A. 1.42 ´ 10-5
B. 1.42 ´ 10-7
C. 1.77 ´ 10-5
D. 6.15 ´ 104