IB Chemistry-Paper 1 MCQ (Topic 19-HL)

Another walk through of a tricky multiple choice question.

[icameisaw]

can we think of this question in terms of the fact that so4 2- isn't usually (or cannot be) oxidized, hence water would be oxidized and would form o2 gas?

[alexeven]

Thank you for these videos!! Also shouldn't Calcium (Ca) be lower than Sodium (Na) in the activity series? Referring to the IB chemistry data booklet for this.