Chemistry, asked by navpreetinfo85, 3 months ago

b) What colour change
is seen? Compare the
copper compounds at the
beginning and end of the
reaction.

Answers

Answered by bcnkiller

Explanation:

The physical change you should observe is the copper-colored metal vanishing as the solution turns blue (from [Cu(H2O)6]2+, the hexaaquacopper ion) and a brown gas (NO2) is evolved. Hydroxide ion (OH-) binds to the copper (II) ion even more strongly than does water.

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