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ICSE Class 10 Chemistry 2019 Paper

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Question : 85 of 86
Marks: +1, -0
Study the flow chart given and give balanced equations to represent the reactions A,BA, B and CC :
Solution:  
Mg3N2+  6 H2O(A)→3Mg(OH)2+2NH3\mathrm{Mg}_3 \mathrm{N}_2 +\; {6\,\mathrm{H}_2\mathrm{O}}_{(A)} \rightarrow 3 \mathrm{Mg}(\mathrm{OH})_2+2 \mathrm{NH}_3
NH3+HCl(B)→NH4Cl\mathrm{NH}_3 + \underset{(B)}{\mathrm{HCl}} \rightarrow \mathrm{NH}_4\mathrm{Cl}
2 NH4Cl+Ca(OH)2(C)→CaCl22\,\mathrm{NH}_4\mathrm{Cl} + {\mathrm{Ca}(\mathrm{OH})_2}_{(C)} \rightarrow \mathrm{CaCl}_2 +2 H2O+2 NH3+2\,\mathrm{H}_2\mathrm{O}+2\,\mathrm{NH}_3
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