Question

give one example each of displacement decomposition and combination reaction with explanation

Answer 1

tulikak65

Secondary SchoolScience 15+8 pts

Give one example each of displacement decomposition and combination reaction with explanation

Report by SharveshV7881 19.08.2018

Answers

janardhan521248

Janardhan521248 Expert

2. Decomposition Reaction :

A chemical reaction in which a single compound splits into two or more simple substances is called a decomposition reaction.

When mercuric oxide is heated in a crucible, the orange-red powder begins to darken and a silver mirror begins to deposit on the cooler parts of the crucible. This is mercury. If we hold a glowing splint near the crucible, it can relight. This shows that the gas evolved during the reaction is oxygen.

2HgO(s) 2Hg(s) + O2 ↑

Mercuric oxide Mercury Oxygen

3.Displacement Reaction:

Reactions in which the more reactive element displaces the less reactive element from its compound are called displacement reactions.

Zinc displaces copper in copper sulphate to form zinc sulphate.

Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s)

Zinc Copper sulphate Zinc sulphate

Hope this helps you

Mark my answer as brainliest

Answer 2

displacement reaction
cuo+H2_-> cu+H2O
combination reaction
cu+o2-} cuo