ICSE Class 10 Chemistry 2023 Solved Paper
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State one relevant observation for each of the following:
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Question : 67
Total: 88
To the copper nitrate solution, initially few drop of sodium hydroxide solution is added and then added in excess.
Solution:
When a few drops of sodium hydroxide solution is added to copper nitrate solution, light blue colour ppt. of copper hydroxide is formed. This ppt. is insoluble in excess NaOH
Cu ( NO 3 ) 2 ( a q ) + 2 NaOH →
+ 2 NaNO 3 ( a q )
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