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Which procedure(s) will allow a student to differentiate between solid sodium sulphate and solid sodium sulphite?
(P) Make solutions of each and look for a precipitate when added to 0.10 M Ba(NO₃)₂ .
Add crystals of each to 0.10 M HCl and watch for bubbles.
(R) Make solutions of each and test with a pH indicator

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R only

Q and R only

P only

P and Q only

answer is D.

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Detailed Solution

To distinguish between solid sodium sulphate and solid sodium sulphite watch for bubbles as you add crystals of each to 0.10 M HCl additionally you can make solutions for each and conduct tests using a pH indicator.

Hence the correct option is D

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