Question

Write a chemical equation for the reaction in which the following changes take place with an example for each
a) change in color
b) change in temperature
c) formation of precipitate

Answer 1

Answer:

change in colour is right answer

Answer 2

Answer:

• Change in color :PbNO3 + KI---> PbI + KNO3
• Change in temperature :Zn + H2SO4----->ZnSO4 + H2
• Formation of precipitate :Na2SO4 + BaCl2----> BaSO4 + 2 NaCl (ppt)