Answer to Question #143467 in General Chemistry for yara

Question

For the following reaction identify which element is reduced and which is oxidized. Justify your answers

b)Ca + H2O → CaO + H2

Answer 1

In this reaction, the Ca loses electrons (is oxidized):

Ca⁰ → Ca²⁺ + 2e^-

and H gains electrons (is reduced):

2H⁺ + 2e^- → 2H⁰