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NEET 2023

Exam: NEET
Year: 2023
Subject: Chemistry
Chapter: Some Basic Concepts of Chemistry

NEET 2023 · Chemistry · Some Basic Concepts of Chemistry

The right option for the mass of CO _ 2 produced by heating 20g of...

The right option for the mass of ${CO}_{2}$ produced by heating $20g of 20 %$ pure limestone is (Atomic mass of $Ca = 40$ )

\left[{CaCO}_{3}\overset{1200K}{\to}CaO + {CO}_{2}\right]$

Options

A $1 . 32g$
B $1 . 12g$
C $1 . 76g$
D $2 . 64g$

Correct answer

C. $1 . 76g$

Step-by-step solution

${CaCO}_{3}\overset{1200K}{\to}CaO + {CO}_{2}$

According to the given equation, 100 grams of calcium carbonate gives 44 grams of carbon dioxide.

Given that 20 grams of 20% pure lime stone, it means the given lime stone contain 4 grams of ${CaCO}_{3}$ .

Hence, the maximum amount of ${CO}_{2}$ produced

$= \dfrac{4 \times 44}{100} = 1 . 76g$

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