Chen Yao Le's answer to Shanice Lee's Junior College 2 H2 Maths question.

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Chen Yao Le
Chen Yao Le's answer
37 answers (Tutor Details)
1st
"Effervescence was observed."

Part (i) is wrong largely because you didn't use the information given and also you lack the concept of how to construct half equations in redox.

The rest is mole calculation which should be easily answered.