[CKabes]

When mixing solutions of Sodium Hydroxide (NaOH) and Copper Sulfate (CuSO₄) a blue precipitate of Copper Hydroxide (CuOH) is formed because of the metathesis reaction that takes place. In my chemistry class today, however, we found that in the beakers of some groups, green particles were also found along with the blue CuOH. One group even had goup-like masses of green after they mixed their solutions.

Any ideas as to why green particles would be found in some groups along with the blue Copper Hydroxide? Is it caused from impurities?

[Borek]

a blue precipitate of Copper Hydroxide (CuOH)

Cu(OH)₂.

Any ideas as to why green particles would be found in some groups along with the blue Copper Hydroxide? Is it caused from impurities?

NaOH solutions absorb carbon dioxide and become solutions of NaOH and sodium carbonate.