Question

Why the test tube becomes cold when ammonium chloride is added to barium hydroxide ?

Answer 1

Answer:

Take about 2 g barium hydroxide in a test tube. Add 1 g of ammonium chloride and mix with the help of a glass rod. Touch the bottom of the test tube with your palm. What do you feel? Is this an exothermic or endothermic reaction?NCERT Class 10th Science Chapter 1 Chemical Reactions and Equation

Answer 2

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when we mix barium hydroxide with ammonium chloride the bottom of test tube became cold due to absorption of heat, so it is an endothermic reaction.

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