Question

In: Chemistry

Consider the water-shift gas reaction: H2O + CO --> H2 + CO2 A closed reaction vessel...

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

Solutions

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