JEE Main · 2022 · 26 Jun 2022 · Shift 1 · Surface Chemistry

2.0 g of

H_{2}

gas is adsorbed on 2.5 g of platinum powder at 300 K and 1 bar pressure. The volume of the gas adsorbed per gram of the adsorbent is
____ mL.
(Given :

R = 0.083 L

bar

K^{- 1} mol^{- 1}

)

Answer: 9960

Solution

Moles of

H X_{2}

\frac{2.0}{2} = 1

mol

Using ideal gas equation:

V = \frac{n R T}{P}

V = \frac{1 \times 0.083 \times 300}{1} = 24.9

L = 24900 mL

Volume per gram of adsorbent (platinum):

\frac{24900}{2.5} = 9960

mL/g

Answer: 9960

JEE Main · 2022 · 26 Jun 2022 · Shift 1 · Integer answer

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