Question

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Answer 1

Answer:

1.The lead bromide is kept in the molten state because -

It is an ionic compound and hence, in the solid state, the ions are held using strong electrostatic forces of attraction and hence, they fail to conduct electricity. In the molten states, there ions gain mobility and hence, they easily conduct electricity.

2.

PRODUCT OBTAINED AT X -

The X electrode is anode and hence -

reddish brown bromine vapors are obtained.

PRODUCT OBTAINED AT Y -

The Y electrode is cathode and hence -

silvery grey deposit of lead metal is obtained.

3.

REACTION AT ANODE

Br⁻ - e⁻ ----> Br

Br + Br ------> Br₂ (reddish brown vapours)

4.

The crucible is made up of silica.

This is because -

1. It is non - reactive

2. It can withstand high temperatures

3. It is almost a non conductor of electricity.

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