equations

Question 1

On heating:

Cupric nitrate

with characteristics

Answer 1

2Cu(NO3)2 –> 2CuO + 4NO2 + O2

Colour changes from Blue to Black

Question 2

On heating:

Plumbous nitrate

with characteristics

Answer 2

2Pb(NO3)2 –> 2PbO + 4NO2 + O2

colour changes from white to Yellow

Question 3

Reaction with platinum as Catalyst

Answer 3

4NH₃ + 5O₂ —> 4NO + 6H₂O

Pt at 800˚C

Question 4

Reaction proceeding with sound and Reactant name

Answer 4

C₂H₂ —> 2C + H₂

Acetylene

Question 5

Simple preparation of Ammonia

with conditions

Answer 5

N₂ + 3H₂ <—> 2NH₃

Fe; 450˚C; 200 atmos. pressure

Question 6

Reaction proceeding with electricity

Answer 6

2H₂O —> 2H₂ + O₂

or with heat instead

Question 7

Formation of Ozone

with condition

Answer 7

3O₂ —> 2O₃

under ultra violet light

Question 8

Formation of Hydrochloric Acid

with condition

Answer 8

H₂ + Cl₂ —> 2HCl

under diffused sunlight

Question 9

On heating:

Trilead Tetraoxide

Answer 9

2Pb₃O₄ —> 6PbO + O₂

* Ppt. red when hot, yellow when cooled, fuses with with testube

Question 10

Simple Evolution of NO

Answer 10

N₂ + O₂ —> 2NO

at 3000˚C

Question 11

Formation of bromine

Answer 11

4AgBr —> 2Ag₂Br + Br₂

under sunlight

Question 12

Lime water test

Answer 12

CaO + CO₂ <—> CaCO₃