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JEE Main 202125 JulyMorning Shift

Exam: JEE Main
Year: 2021
Date: 25 July
Shift: Morning Shift
Subject: Chemistry
Chapter: Some Basic Concepts of Chemistry

JEE Main 2021 · 25 July · Morning Shift · Chemistry · Some Basic Concepts of Chemistry

Consider the complete combustion of butane, the amount of butane...

Consider the complete combustion of butane, the amount of butane utilized to produce

72 . 0g

of water is ______

\times {10}^{- 1}g

. (in nearest integer)

Correct answer

0

Step-by-step solution

${C}_{4}{H}_{10} + \dfrac{13}{2}{O}_{2} ⟶ 4{CO}_{2} + 5{H}_{2}O$

Moles of ${H}_{2}O = \dfrac{72}{18} = 4$

Moles of ${C}_{4}{H}_{10}$ used $= \dfrac{1}{5} \times 4$

Weight of ${C}_{4}{H}_{10}$ used $= \dfrac{4}{5} \times 58$

$= 46 . 4gm$

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