What Is the Correct Equilibrium Constant Expression for the Following $K=\frac{P_{\mathrm{CO}_{2}} \times P_{\mathrm{H}_{2} \mathrm{O}}}{P_{\mathrm{CH}_{4}} \times P_{\mathrm{O}_{2}}}$

question 37

Multiple Choice

What is the correct equilibrium constant expression for the following reaction? CO₂(g) + 2H₂O(g) ⇌ CH₄(g) + 2O₂(g)

• A) \(K=\frac{P_{\mathrm{CO}_{2}} \times P_{\mathrm{H}_{2} \mathrm{O}}}{P_{\mathrm{CH}_{4}} \times P_{\mathrm{O}_{2}}}\)
• B) \(K=\frac{P_{\mathrm{CH}_{4}} \times P_{\mathrm{O}_{2}}}{P_{\mathrm{CO}_{2}} \times P_{\mathrm{H}_{2} \mathrm{O}}}\)
• C) \(K=\frac{P_{\mathrm{CH}_{4}} \times\left(P_{\mathrm{O}_{2}}\right)^{2}}{P_{\mathrm{CO}_{2}} \times\left(P_{\mathrm{H}_{2} \mathrm{O}}\right)^{2}}\)
• D) \(K=\frac{P_{\mathrm{CO}_{2}} \times\left(P_{\mathrm{H}_{2} \mathrm{O}}\right)^{2}}{P_{\mathrm{CH}_{4}} \times\left(P_{\mathrm{O}_{2}}\right)^{2}}\)
• E) none of the above

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Definitions:

Net Present Value

A calculation that compares the present value of cash inflows to the present value of cash outflows over a period of time, used in capital budgeting to assess profitability of investments.

Return on Investment

A performance measure used to evaluate the efficiency or profitability of an investment or to compare the efficiency of several different investments.

Straight-Line Depreciation

A method of allocating an asset's cost evenly throughout its useful life.

Salvage Value

The estimated residual value of an asset after its useful life is over and it has been fully depreciated.