Question

Aim: To identify the type of reaction by studying the reaction and recording the observa
Chemicals : Zinc dust, magnesium strip, lead nitrate powder, dilute sulphuric acid,
(
Procedure :
Practical No. 2
Part III
1. Combustion of magnesium in air.
2. Action of dilute sulphuric acid on zinc,
3. To heat lead nitrate.
Apparatus : Beaker, test tubes, pair of tongs, burner, glass rod, etc,
1.
2.
3.
4
5
React
Obser
Part I: Combustion of magnesium in air.
1. Hold a piece of magnesium strip on the flame of a burner.
2. Record the observation and write the reaction.
Reaction 1:
2MgO (5)
2Mg (5) + 0,(s)
Observations:
1. The magnesium strip burns with luminous flame.
2. A white coloured powder remains behind.
21
Number of
products
Number of
reactants
Interesting feature of
the reaction
Type of the
reaction
Reaction
Inf
2M +0.
Mgo
1.
Part II: Action of dilute sulphuric acid on zinc.
1. Take someone the
2. Add 3 to 4 ml data (HSO) in it.
3. Record the observand write the equation,
200) + H SO,
Reaction 2
ZnSO (aq) + H
Observations:
1. A colours us is liberated
2. A glowing splinter get extinguished and the gas bumns with blue flame production a noise
3. The zinc powder disappears and a colourless solution is obtained.
Reaction
Number of Number of
reactants products
Interesting
feature of the
reaction
Type of the
reaction
Zn + H SO
ZnSO & H
4​

Answer 1

Answer:

1. Combustion of magnesium in air.

2. Action of dilute sulphuric acid on zinc,

3. To heat lead nitrate.

Apparatus : Beaker, test tubes, pair of tongs, burner, glass rod, etc,