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12 g of Mg will react completely with an acid to give . 1. 1 mole of H2 2. 1/2 mole of H2 3. 1 mole of O2 '?
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12 g of Mg will react completely with an acid to give . 1. 1 mole of H...
To find the mole of H2 produced from 12g of Mg with an acid:
You can pick two acids; a dibasic and monobasic acid
Mg + 2HCl ------> MgCl2 + H2       (1 mole of hydrogen)
Mg + H2SO4----> MgSO4 + H2      (1 mole of hydrogen) 

- in both instances the mole of hydrogen produced is 1 and the mole ratio of Mg:H2 is 1:1. This means that if there is 1 mole of Mg then there will be 1 mole of H2

Moles of 12g Mg:

Moles= mass
           molar mass
Molars mass magnesium = 24

moles = 12/24 = 0.5 moles.

since ratio was 1:1, then the moles of hydrogen produced will also be 0.5 moles

Therefore if 12g magnesium reacts with an acid half a mole of hydrogen gas is produced.
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12 g of Mg will react completely with an acid to give . 1. 1 mole of H2 2. 1/2 mole of H2 3. 1 mole of O2 '?
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12 g of Mg will react completely with an acid to give . 1. 1 mole of H2 2. 1/2 mole of H2 3. 1 mole of O2 '? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about 12 g of Mg will react completely with an acid to give . 1. 1 mole of H2 2. 1/2 mole of H2 3. 1 mole of O2 '? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 12 g of Mg will react completely with an acid to give . 1. 1 mole of H2 2. 1/2 mole of H2 3. 1 mole of O2 '?.
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