Question

state one equation of each of

a) a reaction in which gas is formed. b) a reaction in which residue is left

c) a reaction in which state change is involved. d) a reaction in which catalyst is involved. if you say correct answer I will mark you brainleast​

Answer 1

Answer:

a) H2CO3 (aq) → H2O (l) + CO2(g)

b) 2Pb(NO3)2 (s)→ 2PbO (s) + 4NO2 (g) + O2 (g)

   lead nitrate       lead oxide  nitrogen oxide  oxygen

In this reaction lead oxide is the residue.

c) NH3 + HCl ← NH4Cl

Ammonia gas reacts with hydrogen chloride gas to produce solid ammonium chloride. (technically almost all reactions have some sort of a change in state)

d) Preparation of oxygen by thermal decomposition of KClO3:

2KClO3 → 2KCl + 3O2 ( Manganese dioxide).

P.S: I would like to give credit to websites that helped me in writing this answer. Thankyou