Sodium chloride is electrolysed. The ionic half equations are: - - Negative electrode: 2(H2O) + 2e- ---> 2(OH-) +H2 - - Positive electrode: 2(Cl-) --> CL2 + 2e- - - State how these ionic half equations show that equal volumes of the two gases should be collected.

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1. Sodium chloride is electrolysed. The ionic half equations are: - - Negative electrode: 2(H2O) + 2e- ---> 2(OH-) +H2 - - Positive electrode: 2(Cl-) --> CL2 + 2e- - - State how these ionic half equations show that equal volumes of the two gases should be collected.