Verified Solution • 2025–26 Session moderate

QJEEM21Ch12d5: JEE Main 2021 Chemistry - Class 11 JEEM21Ch12d5 Solution: The pressure exerted by a non-reactive gaseous mixture of 6.4g…

The pressure exerted by a non-reactive gaseous mixture of 6.4g of methane and 8.8 g of carbon dioxide in a 10L vessel at 27 ∘^\circ C is __________ kPa. (Round off to the Nearest Integer).

[Assume gases are ideal, R = 8.314 J mol −- 1 K −- 1

Atomic masses : C : 12.0 u, H : 1.0 u, O : 16.0 u]

Step-by-Step Verified Solution

V = 10 L, T = 27 ∘^\circ C = 300 K

(m)methane = 6.4 g, (m)CO2 = 8.8 g

PV = ntotalRT

P ×\times 10 ×\times 10 −- 3 = (6.416+8.844)\left( {{{6.4} \over {16}} + {{8.8} \over {44}}} \right) ×\times 8.314 ×\times 300

P ×\times 10 −- 2 = (0.4 + 0.2) ×\times 8.314 ×\times 300

P = 149652 Pa

P = 149.652 KPa ≈\approx 150 kPa

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