Justify that the following reactions are redox reactions.
a) `CuO(s)+H_(2)(g)toCu(s)+H_(2)O(g)`
b) `Fe_(2)O_(3)(s)+3CO(g)to2Fe(s)+3CO_(2)(g)`
c) `4BCl_(3)(g)+3LiAlH_(4)(s)to2B_(2)H_(6)(g)+3LiCl(s)+3AlCl_(3)(s)`
d) `2K(s)+F_(2)(g)to2K^(+)F^(-)(s)`
e) `4NH_(3)(g)+5O_(2)(g)to4NO(g)+6H_(2)O(g)`

Balance the following chemical equations. iii) Ag_((s))+H_(2)S_((g)) rarr Ag_(2)S_((s))+H_(2)O_((l))

Which of the following reactions will get affected by increasing the pressure? Also, mention whether change will cause the reaction to go into forward or backward direction. (i) COCl_(2)(g)hArrCO(g)+Cl_(2)(g) (ii) CH_(4)(g)+2S_(2)(g)hArrCS_(2)(g)+2H_(2)S(g) (iii) CO_(2)(g)+C(s)hArr2CO(g) (iv) 2H_(2)(g)+CO(g)hArrCH_(3)OH(g) (v)CaCO_(3)(s)hArrCaO(s)+CO_(2)(g) (vi) 4NH_(3)(g)+5O_(2)(g)hArr4NO(g)+6H_(2)O(g)

Balance the following chemical equations. ii) Fe_(2)O_(3(s))+C_((s))rarr Fe_((s))+CO_(2(g))

Suggest a scheme of classification of the following redox reactions (a) N_(2) (g) + O_(2) (g) rarr 2 NO (g) (b) 2 Pb (NO_(3))_(2) (s) rarr 2 PbO (s) + 4 NO_(2) (g) + O_(2) (g) (c) NaH(s) + H_(2) O (l) rarr NaOH (aq) + H_(2) (g) (d) 2NO_(2) (g) + 2OH^(-) (aq) rarr NO_(2)^(-) (aq) + NO_(3)^(-) (aq) + H_(2) O (l)

Write reaction equotient, Q, for each of the following reactions. a. 3O_(2)(g)hArr2O_(3)(g) b. 4NH_(3)(g)+7O_(2)(g)hArr 4NO_(2)(g)+6H_(2)O(g)

Number of phases present in the following thermodynamic systems are: (a) NH_(4) HS_((s)) hArr NH_(3(g)) + H_(2)S_((g)) (b) CaCO_(3(s)) hArr CaO_((s)) + CO_(2(g)) (c ) N_(2(g)) + 3H_(2(g)) hArr 2NH_(3(g))

For the first order reaction 2N_(2)O_(5(g))to4NO_(2(g))+O_(2(g))