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
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)
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.
Consider the given acid ionization constants. Identify the strongest conjugate base. Acid KaHNO2 (aq) 4.6 ´ 10-4HCHO2 (aq) 1.8 ´ 10-4HClO (aq) 2.9 ´ 10-8HCN (aq) 4.9 ´ 10-10
A. NO2- (aq)
B. CHO2- (aq)
ClO- (aq)
D. CN- (aq)