Question

When copper(II) nitrate reacts with sodium hydroxide, a solid is formed. Which of these is the...

When copper(II) nitrate reacts with sodium hydroxide, a solid is formed. Which of these is the solid formed in the reaction?

water, H2O

copper metal, Cu

sodium nitrate, NaNO3

sodium copper, NaCu

copper(II) hydroxide, Cu(OH)2

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Answer #1

Answer:          copper(II) hydroxide, Cu(OH)2

The combination of copper II nitrate and sodium hydroxide can also be referred to as a double displacement reaction. Reactions that are called double displacement reactions often include precipitation reactions, gas forming reactions and neutralization reactions. For example, sodium hydroxide is a strong base, and when it's added to copper II nitrate, the result is the precipitation of insoluble blue precipitate copper hydroxide or a double displacement reaction.

Cu(NO3)2 + 2NaOH -------> Cu(OH)2 (s) + 2NaNO3

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