1.

Take about 2 g barium hydroxide in a test tube. Add 1 g of ammonium chloride and mixwith the help of a glass rod. Touch the bottom of the test tube with your palm. What do youfeel? Is this an exothermic or endothermic reaction?

Answer»

The reaction between barium hydroxide and ammonium chloride is an endothermic reaction. Heat is absorbed during endothermic reaction, fall in temperature is observed.Ba(OH)2 +2NH4Cl → BaCl2 +2NH4OHThis reaction is called double displacement reaction

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