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Question
With reference to Acid explain with a suitable example of how the reactivity of the metals could be differentiated.
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Solution
Action of metals with acids: As reactivity decreases from top to bottom in metal activity series.
K and Na react with dil. HC1 and dil. H2SO4 explosively to produce H2↑
\[\ce{2Na + 2HCl->2NaCl + H2}\]
Ca, Mg, Al, Zn, and iron react less vigorously with decreasing vigour with dil. H2SO4 or dil. HC1 to produce H2↑
\[\ce{Ca + H2SO->CaSO4 + H2}\]
Metals below hydrogen do not react with dil. acid and do not displace H2 from it.
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