Question

A sample of Mg was burnt in air to give a mixture of MgO and Mg3N2. The ash was dissolved in 60 meq of HCl and the resulting solution was back titrated with NaOH. 12 meq of NaOH were required to reach the end point. An excess of NaOH was then added and the solution distilled. The ammonia released was the trapped in 10 meq of acid. Back titration of this solution required 6 meq of base. Calculate the % of Mg burnt to the nitride.
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Answer 1

Answer:

12meq

Explanation:

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