Question

1. give the reactions with equations that take place in the presence of light heat and electricity 2. why is the respiration considered as an exothermic reaction explain with an equation 3. when solution of lead nitrate and potassium iodide is mixed what was the colour of the precipitation formed name the ppt formed write the balanced chemical equation for this reaction is this a double displacement reaction​

Answer 1

Answer:

1) ) silver chloride decomposes into silver and chlorine . 2) hydrogen peroxide decomposes into water and oxygen. ex- due to electricity. 1)water decomposes into hydrogen and oxygen

2) Answer Expert Verified

Respiration is considered as exothermic reaction because energy is released in this process. Glucose combines with oxygen present in our cells to form carbon dioxide and water along with energy