Question

For a reaction

$2 \mathrm { NH } _ { 3 ( \mathrm {~g} ) } + \mathrm { CO } _ { 2 ( \mathrm {~g} ) }$ the equilibrium pressure is 3 atm. $\mathrm { K } _ { \mathrm { P } }$ for the reaction will be.

• A. 27
• B. 4
• C. 3
• D. 9

Answer 1

Answer: (B)

4

Answer 2

: $2 \mathrm { NH } _ { 3 ( \mathrm {~g} ) } + \mathrm { CO } _ { 2 ( \mathrm {~g} ) }$

2p p

When volume and temperature are constant, the number of moles of a gas is proportional to its partial pressure.

So, 2p + p = 3

3p = 3, $\therefore$p = 1 atm