Question

To measure the change in temperature when the following chemical reactions are carried
them as exothermic or endothermic reaction:
(7) Reaction between sodium hydroxide solution and hydrochloric acid solution.
() Reaction between barium hydroxide solution and ammonium chloride solution​

Answer 1

Answer:

1.Exothermic

2.Endothermic

Please mark as brainliest answer.

Answer 2

Ammonium Chloride is slightly acidic and Barium Hydroxide very basic, so you will get an acid-base reaction occurring (though both reactants are solid). I can remember doing this one in my lab sessions at university all those years ago, because the reaction is highly endothermic and the temperature of the mixture drops to such an extent that any moisture on the outside of the beaker freezes (40°C drop in temperature or thereabouts….)

Ba(OH)2 +2NH4Cl —->BaCl2 + 2NH3 +2H2O