In: Chemistry
Consider the water-shift gas reaction:
H2O + CO --> H2 + CO2
A closed reaction vessel maintained at 3000 degrees Celcius is filled with 0.475 M H2 and 0.490 M CO2. At equilibrium, their respective concentrations are 0.410 and 0.425 M.
PART A:
The following ratio represents
[H2][CO2] / [H2O][CO]
CHOOSE ONE OR MORE:
the law of mass action, the mass action expression, the equilibrium constant expression, the equilibrium constant. none of these
PART B:
which way must the system shift in order to attain equilibrium
CHOOSE ONE
to the right, to the left, cannot be determined
PART C:
the value 41.0, represents
CHOOSE ONE OR MORE
the law of mass action, the mass action expression, the equilibrium constant expression, the equlibrium constant, none of these
PART D:
The equilibrium constant, Kc, is unitless, why?
CHOOSE ONE
in the expression for Kc, molarities are always used so units are redundant
the cncentrations in K are theoretically ratios of the concentrations to an ideal standard 1.000 M
the concentration units are ignored. K actually has units if there aren't equal numbers of M units in thenumerator and the denominator