in the laboratory preparation of HCL acid from NaCl and concentrated H2 s o4 the recipient salt formed at temperatures above 200 degree Celsius forms a hard Crust and sticks to the glass .why does this happen
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it happens so as the aqueous solution of NaCl contains water and when you add concentrated acid to water then it is highly exothermic so it is natural for the temperature to rise above 200 degree Celsius and now the salt from that is sodium sulphate gets melted due to the high temperature and hence take at the bottom of the glass thank you I think that this might help you make me as brainliest if possible
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Answer:
When NaCl and conc. H₂SO₄ is heated above 200°C, sodium sulphate forms a hard crust, sticks to the glass and is difficult to remove.
Explanation:
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