Question

Write a chemical equation of the reaction in which the following changes have taken place with example of each- change in colour and second change in temperature

Answer 1

Answer:

Change in colour

CuSO4 + Fe -----------> FeSO4 + Cu

Pb(NO3)2 + KI ----------> PbI + KNO3

Change in temperature

CaO + H2O --------------> Ca(OH)2

Pb(NO3)2 --------------> PbO + NO2 + O2

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