A piece of zinc is placed in a copper(II) sulphate solution
2008-01-02 9:32 am
write a balanced chemical equation , with state symbols , for the following chemical change , and state the observation
回答 (1)
2008-01-02 10:19 am
✔ 最佳答案
chemical equation :Zn(s)+ CuSO4(aq) -> Cu(s) + ZnSO4(aq)ionic equation : Zn(s) + Cu^2+(aq) -> Cu(s) + Zn^2+(aq)
observations:
The piece of zinc dissolves and gets smaller .
The colour of the solution changes from blue to colourless.
Reddish brown solid is deposited at the bottom of test tube.
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