Question

Write  an  equation  for  decomposition  reaction  where  energy  is  supplied  in  the  form  of
heat/light/electricity?

Answer 1

CaCo3 -------(heat )---------   Cao +  CO2

 2Ag cl ------- (light)----------    2Ag  +  cl2

 2Ag Br ----------(light)------------     2Ag  +  Br2

Answer 2

Here is the answer for your question!!!

1. CaCo3 (s) -----> Cao (s) + Co2 (g) {heat energy}

2. 2AgCl (s) -----> 2Ag (s) + Cl2 (g) {Light energy}

3. 2H2 (l) ------> 2H2 (g) + O2 (g) {Electricity}