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Stoichiometric Calculations

Al s + HCl aq...

Question

$A l (s) + H C l (aq) \to A l C l_{3} (s) + H_{2} (g)$

The sum of the stoichiometric coefficients of the reactants and the products in the balanced reaction is:

A

15

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B

14

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C

13

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D

12

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Solution

The correct option is C 13
The balanced equation is:
$2 A l (s) + 6 H C l (aq) \to 2 A l C l_{3} (s) + 3 H_{2} (g)$
Therefore, the sum of the stoichiometric coefficients in the balanced reaction $= 2 + 6 + 2 + 3 = 13$

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Stoichiometric Calculations

Standard XII Chemistry

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