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Mole Concept and Avogadro's Number

Calcium carbo...

Question

Calcium carbonate decomposes on heating according to the following equation.
$C a C O_{3} (s) ⇌ C a O (s) + C O_{2} (g)$
How many moles of $C O_{2}$ will be obtained by decomposition of 50 g $C a C O_{3}$ ?

\frac{3}{2}

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\frac{5}{2}

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\frac{1}{2}

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Solution

The correct option is D $\frac{1}{2}$
Moles of $C a C O_{3} = \frac{50}{100} = 0.5$
1 mole of $C a C O_{3}$ will produce 1 mole of $C O_{2}$ .
So, 0.5 mol of $C a C O_{3}$ will produce 0.5 mole of $C O_{2}$ .

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Calcium carbonate decomposes on heating according to the equation:

$C a C O_{3}$ (s) $⟶$ CaO(s)+ $C O_{2}$

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