Mg(s)+2HCl→MgCl2+H2 (g).This is the metal and acid reaction to produce hydrogen gas.Name the type of reaction:
Rearrangement reaction
Combustion reaction
Displacement reaction
None of these
A
Combustion reaction
B
Displacement reaction
C
Rearrangement reaction
D
None of these
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Solution
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The reaction Mg(s)+2HCl→MgCl2+H2 represents a displacement reaction. Mg metal displaces hydrogen from HCl. Note: In a displacement reaction, a more reactive element displaces a less reactive element from its salt solution.
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