ICSE − Q & A

Define:homeostasis

In the laboratory preparation of Ammonia  its written " A higher ratio by weight of the alkali used may counter act the loss by sublimation of ammonium chloride on heating in the solid state . " 
Here i think the Ammonium chloride due to sublimation has its qty decreased so shouldnt it be used more instead of alkali ?

Can explain the reason and if my understanding is correct .

P.S --> Its given in Viraf Dalal pg 179 if needed .
Thanks ! .

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