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Question
State one relevant observation for the following:
To the copper nitrate solution, initially, few drops of sodium hydroxide solution is added and then added in excess.
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Solution
Sodium hydroxide reacts with copper nitrate to produce a sodium nitrate solution and a blue-colored precipitate copper hydroxide.
\[\ce{Cu(NO3)2 + 2NaOH -> Cu(OH)2 + 2NaNO3}\]
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