When a mixture of sand and ammonium chloride is heated in a hard glass test tube the mouth of test tube should be facing away from the experimenter. Why?
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HEY!!
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✔️On heating ammonium chloride dissociates to form Ammonia gas and hydrochloric acid.
✔️These gases on coming out of the test tube cool and Re - combine to form ammonium chloride vapour.
✔️However, some amount of ammonia and hydrochloric acid escape from recombination.
✔️These gases can cause irritation in the eyes so to avoid this the mouth of hard glass test tube is kept away from the experimenter.
__________________________
✔️On heating ammonium chloride dissociates to form Ammonia gas and hydrochloric acid.
✔️These gases on coming out of the test tube cool and Re - combine to form ammonium chloride vapour.
✔️However, some amount of ammonia and hydrochloric acid escape from recombination.
✔️These gases can cause irritation in the eyes so to avoid this the mouth of hard glass test tube is kept away from the experimenter.
akhlaka:
Thnks for telling bro
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