Question

[5]
(i) Balance each of the chemical equations given below:
1. FeCl3 + NH4OH → NH4Cl + Fe(OH)3
2.KI + Cl2 ->KCI +12
Identify the substance which matches the description given below:
1. White crystalline substance which sublimes on heating.
2. The gas which turns lime water milky but has no effect on potassium dichromate paper.
3. The metal that cannot displace hydrogen from dilute hydrochloric acid.​

Answer 1

Answer:

first is naptholene

second is carbon dioxide

there are many metals which cannot displace hydrogen for example copper

Answer 2

Answer:

i) 1. FeCl3 + 3NH4OH → 3NH4Cl + Fe(OH)3

2. 2KI + Cl2 ->2KCI +I2

1. Ammonium chloride

2.carbon dioxide

3. mercury or copper or silver etc.

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