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Question

A: Nitroso Iron [II] sulphate
B: Iron [III] chloride
C: Chromium sulphate
D: Lead [II] chloride
E: Sodium chloride.
Select from A, B, C, D and E —
(i) A compound soluble in hot water but insoluble in cold water.
(ii) A compound which in the aqueous solution state, is neutral in nature.

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The diagram represents the preparation of sodium sulphate salt from dil. H2SO4 acid and sodium hydroxide.

1. Name the apparatus ‘A’.

2. Name the substance ‘X’ placed in ‘A’ and the substance ‘Y’ placed in B.

3. State the reason for conducting the titration using the apparatus ‘A’ and ‘B’.

4. State which solution is transferred to the evaporating dish and evaporated to point of crystallization for obtaining the salt.

5. State why titration is not conducted for the preparation of copper [II] sulphate crystals by neutralization.

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