Chemistry, asked by sanketkumarkwr, 9 months ago

(a) Write one observation for the following

() Sodium hydroxide solution when added to a solution of zinc sulphate first

drop wise and then in excess.

(1) Sodium thiosulphate when reacts with dilute hydrochloric acid

(ii) Electrolysis of copper sulphate solution using copper

electrodes.​

Answers

Answered by kartavyasachan4000
4

Answer:

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Answered by brindaMS
1

Answer:

When sodium hydroxide solution is added drop by drop to zinc sulphate solution a white precipitate is formed which is soluble in excess of sodium hydroxide.

ZnSO4 + 2NaOH → Zn(OH)2 + Na2SO4

Zn(OH)2 + 2NaOH → Na2ZnO2 + 2H2O

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