28. A metal M reacts with an acid according to the equation
M + H+
M3+ + H
Write the balanced equation. What can metal 'M' be possible?
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Among the given metals, only aluminium has a stable +3 oxidation state. Aluminium reacts with acid to produce a metal salt and H2 gas. For example: Al reacts with HCl to give AlCl3 and H2 gas.
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