A magnesium ribbon, when burnt in air, left an ash containing MgO and M g 3 N 2 . The ash was found to consume 0.6 mol of HCl according to the reactions: MgO + HCl ⇄ MgCl 2 + H 2 O . M g _ 3 N

Question

A magnesium ribbon, when burnt in air, left an ash containing MgO and $M g_{3} N_{2}$ . The ash was found to consume 0.6 mol of HCl according to the reactions:

$MgO + HCl ⇄ MgCl_{2} + H_{2} O$ .

$M g_3 N_2 + HCl \to MgCl_{2} + 2 NH_{4} Cl$ .

The solution so obtained is treated with excess of NaOH, then 0.1 mol of $N H_{3}$ is evolved:

$NH_{4} Cl + NaOH \to NH_{3} + H_{2} O + NaCl$

The mass (in g) of magnesium burnt is:

Answer:

3

Solution:

TestHub · Accepted Answer

Correct answer: 3

Chemistry - Stoichiometry Question with Solution | TestHub

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