1mole of N _ 2 O _ 4 ( g ) at 300K is kept in a closed container under 1atm . It is heated to 600K when 20% by mole of N _ 2 O _ 4 ( g ) decomposes to N O _ 2 ( g ) . The resultant pressure is

Correct answer: B. 2.4 atm cases & N _ 2 O _ 4 (g) & ⇌ & 2NO_ 2 (g) Initialmole & 1 & & 0 Atequi. & (1-0.20)mole & & 0.40mole cases n _ total =1.2 P _ total = n _ total RT V =2.4atm as P _ 2 P _ 1 = n _ 2 T _ 2 n _ 1 T _ 1

NTA Abhyas 2020

Exam: NTA Abhyas
Year: 2020
Subject: Chemistry
Chapter: Chemical Equilibrium

NTA Abhyas 2020 · Chemistry · Chemical Equilibrium

1mole of N _ 2 O _ 4 ( g ) at 300K is kept in a closed container...

\text{1}\text{mole}

{N}_{2}{O}_{4} ( g )

\text{300}\text{K}

is kept in a closed container under

\text{1}\text{atm}

. It is heated to

\text{600}\text{K}

when

\text{20%}

by mole of

{N}_{2}{O}_{4} ( g )

decomposes to

N{O}_{2} ( g )

. The resultant pressure is

Options

A1.2 atm
B2.4 atm
C2.0 atm
D1.0 atm

Correct answer

B. 2.4 atm

Step-by-step solution

\begin{cases} & {N}_{2} {O}_{4} \text{(g)} & ⇌ & {\text{2NO}_{2} \text{(g)} \\ \text{Initial}\text{mole} & 1 & & 0 \\ \text{At}\text{equi}\text{.} & \text{(1-0}\text{.20)}\text{mole} & & \text{0}\text{.40}\text{mole}\end{cases}

{n}_{\text{total}} \text{=}\text{1}\text{.2}

{P}_{\text{total}} \text{=}\dfrac{{n}_{\text{total}} \text{RT}}{V} \text{=}\text{2}\text{.4}\text{atm}

\dfrac{{P}_{2}}{{P}_{1}} \text{=}\dfrac{{n}_{2} {T}_{2}}{{n}_{1} {T}_{1}}

Practice Chemical Equilibrium on Quantrex Academy →

More from Chemical Equilibrium

Consider the following reactions in which all the reactants and products are present in… JEE Main 2026 Solid carbon, CaO and CaCO _3 are mixed and allowed to attain equilibrium at T K.… JEE Main 2026 In a closed flask at 600 K, one mole of X _2 Y _4 (g) attains equilibrium as given below… JEE Main 2026 One mole each of He and A(g) are taken in a 10 L closed flask and heated to 400 K to… JEE Main 2026 The reaction A(g) leftharpoons B(g) + C(g) was initiated with the amount ' a ' of A(g) .… JEE Main 2026 The values of pressure equilibrium constant recorded at different temperatures for the… JEE Main 2026 For the following reaction at 50° C and at 2 atm pressure, 2N_2O_5(g) leftharpoons… JEE Main 2026 At T(K) , the equilibrium constant of A_2(g) + B_2(g) leftharpoons C(g) is 2.7 × 10^ -5 .… JEE Main 2026 Full Chemical Equilibrium list All NTA Abhyas JEE Main PYQs