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)

How many of the following can produce hydrogen gas, when react with wa

1.	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)
Answer» Solution :`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`