For a general reaction: aA + bB ? cC + dD where all of the reactants and product

Question

For a general reaction:

aA + bB ? cC + dD

where all of the reactants and products are gases, either the equilibrium constant expression, Kc in units of mol/L, or the expression below can be used.

What do the terms pA, pB, pC,and pD mean?

A) The terms pA, pB, pC,and pD refer to the partial pressures of the gaseous reactants and products in mol/L.

B) The terms pA, pB, pC,and pD refer to the concentrations of the gaseous reactants and products in mol/L.

C) The terms pA, pB, pC,and pD refer to the partial pressures of the gaseous reactants and products in an appropriate unit of gas pressure (atm, mmHg (torr), kPa, etc.)

D) None of the other answers are applicable.

A) The terms pA, pB, pC,and pD refer to the partial pressures of the gaseous reactants and products in mol/L.

B) The terms pA, pB, pC,and pD refer to the concentrations of the gaseous reactants and products in mol/L.

C) The terms pA, pB, pC,and pD refer to the partial pressures of the gaseous reactants and products in an appropriate unit of gas pressure (atm, mmHg (torr), kPa, etc.)

D) None of the other answers are applicable.

For a general reaction: aA + bB ? cC + dD where all of the reactants and products are gases, either the equilibrium constant expression, Kc in units of mol/L, or the expression below can be used. For a general reaction: aA + bB ? cC + dD w What do the terms pA, pB, pC,and pD mean? A) The terms pA, pB, pC,and pD refer to the partial pressures of the gaseous reactants and products in mol/L. B) The terms pA, pB, pC,and pD refer to the concentrations of the gaseous reactants and products in mol/L. C) The terms pA, pB, pC,and pD refer to the partial pressures of the gaseous reactants and products in an appropriate unit of gas pressure (atm, mmHg (torr), kPa, etc.) D) None of the other answers are applicable.

Explanation / Answer

PA,PB,PC and PD are considered as the partial pressures (atm,mmHg,torr kPa, etc) of gas molecules A,B,C and D .

Thus option C) is correct.

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