1.

The magnitude of work done (in kcal) when 120 gm of Mg (s) is reacted with excess of hydrochloric acid in an open vessel at `27^@C` is

Answer» Correct Answer - Magnitude of W=3 kcal
Magnitude of W=3 kcal
`Mg(s)+2HCl(aq)toMgCl_2(s)+H_2(g)uarr`
`W= -P_(ed)(V_2-V_1)= -Deltan_(g)RT= - 5xx(2xx300)/1000=-3` kcal


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