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How many of the following can produce hy...

How many of the following can produce hydrogen gas, when react with water
`Na,Cl_(2),CaF_(2),Mg_(3),N_(3),CaH_(2),CaC_(2)`

Text Solution

Verified by Experts

The correct Answer is:
3
`2 Na + 2H_2O to 2NaOH + H_2`
`2Cl_2 + 2H_2O to 2HCl + O_2`
`Ca + 2H_2O to Ca(OH)_2 + H_2`
`2F_2 + 2H_2O to 4HF + O_2`
`Mg_3 N_2 + 6H_2O to 3Mg (OH)_2 + 2NH_3`
`CaH_2 +2H_2O to Ca(OH)_2 + 2H_2`
`CaC_2 +2H_2O to Ca(OH)_2 + C_2H_2`
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