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11 questions from this quiz
A soluble salt
They precipitate out
Copper(II) oxide
Copper(II) chloride
To increase the reaction rate
Excess CuO\text{CuO}CuO remains undissolved
To remove unreacted excess CuO\text{CuO}CuO
Water evaporates
Crystallisation
To neutralise all the acid
CuCl2\text{CuCl}_2CuCl2 and H2O\text{H}_2\text{O}H2O
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