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12 g of Mg (atomic mass 24) will react completely with hydrochloric acid to give
Some Basic Concepts of Chemistry
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14/08/2021 11:16 am
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12 g of Mg (atomic mass 24) will react completely with hydrochloric acid to give
(a) One mol of H2
(b) 1/2 mol of H2
(c) 2/3 mol of O2
(d) both 1/2 mol of H2 and 1/2 mol of O2
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14/08/2021 11:20 am
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Correct answer: (b) 1/2 mol of H2
Explanation:
Mg + 2HCl → MgCl2 + H2↑
1 mole 1 mole
\(\frac{1}{2}\)mole \(\frac{1}{2}\)mole (12g of Mg = \(\frac{1}{2}\) mol)
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