# Q. Certainly blank spaces are left in the following table and these are labelled as A, B, C, D and E. Identify each of them.​ Lab  preparation of Reactants  used Products formed Drying  agent Method of collection (i) HCl gas NaCl + ${H}_{2}S{O}_{4}$ A conc. ${H}_{2}S{O}_{4}$ B (ii)  C Mg${\left(OH\right)}_{2}$  $N{H}_{3}$ D E

Dear student

A is NaHSO4  + HCl
Reaction is  H2SO4 + NaCl → NaHSO4
+ HCl.
This hydrogen chloride is passed through a drying agent and is collected by upward displacement of air, which is B.

Mg3N2  + 6H2O ----> 3Mg(OH)+ NH3
So C is
Mg3N2  + 6H2O
and D is CaO ( Drying agent)
E: Ammonia is collected by downward displacement of air.

Regards

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