4 L -atm is equal to, 40.50 cal, 78.75 cal, 95.23 cal, 96 cal

∵ 1 L − atm ∴ 4 L − atm = 101.266 J = 101.266 × 4 J = 405.06 J = 4.2 405.06 cal [ ∵ 1 cal = 4.2 J ] = 96.4 cal

4 L -atm is equal to

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$4 \mathrm{~L}$ -atm is equal to

ChemistrySome Basic Concepts of ChemistryMHT CETMHT CET 2010

Options:

A $40.50 \mathrm{cal}$
B $78.75 \mathrm{cal}$
C $95.23 \mathrm{cal}$
D $96 \mathrm{cal}$

Solution:

2424 Upvotes Verified Answer

The correct answer is: $96 \mathrm{cal}$

$\begin{aligned} \because 1 \mathrm{~L}-\mathrm{atm} &=101.266 \mathrm{~J} \\ \therefore 4 \mathrm{~L}-\mathrm{atm} &=101.266 \times 4 \mathrm{~J} \\ &=405.06 \mathrm{~J} \\ &=\frac{405.06}{4.2} \mathrm{cal} \quad[\because 1 \mathrm{cal}=4.2 \mathrm{~J}] \\ &=96.4 \mathrm{cal} \end{aligned}$

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