Question

name two metals which we displace hydrogen from dilute acids and two metals which will not ​

Answer 1

Answer:

In electrochemical series, position of Zn and iron is above hydrogen where as copper and mercury are placed below hydrogen. Hence, Zn and Fe can replace hydrogen from dilute acids whereas copper and mercury do not.

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Answer 2

Answer:

iron and alluminium displace hydrogen from dilute acids bcz they are more reactive then hydrogen and , mercury n copper can't bcz they are less reactive then hydrogen