How many of the following reactions are homogenous reversible reactions?
(1) `CH_(3)COOH(l)+C_(2)H_(5)OH(l)hArrCH_(3)COOC_(2)H_(5)(l)+H_(2)O(l)`
(2) `C(s)+CO_(2)(g)hArrCO(g)+H_(2)O(g)`
(3) `H_(2)(g)+CO_(2)(g)hArrCO(g)+H_(2)O(g)`
(4) `CO(g)+CI_(2)(g)hArrCOCI_(2)(g)`
(5) `NH_(4)HS_(s)hArrNH_(3)(g)+H_(2)S(g)`
(6) `CaCO_(3)(s)hArrCaO(s)+CO_(2)(s)`
(7) `N_(2)(g)O_(2)(g)hArr2NO(g)`
(8) `CO_(2)(g)+C(s)hArr2CO(g)`
(9) `SO_(2)+NO_(2)(g)hArrSO_(3)(g)+NO(g)`
(10) `NO(g)+(1)/(2)Br_(2)(l)hArr2NOBr(g)`

Answer

5