What are the catalysts used in the reaction.
i) `N_(2(g))+3H_(2(g))rarr 2NH_(3(g))`
ii) `2SO_(2(g))+O_(2(g))rarr 2SO_(3(g))`

N_(2(g))+O_(2(g))rarr 2NO_(2(g))-Q is ……………..

The enthalpy of the reaction H_(2(g)) + O_(2(g)) rarr H_2O_((g)) is DeltaH_1 and that of H_(2(g)) + O_(2(g)) rarr H_(2)O_((l)) is Delta H_2 . Then

C_((s))+O_(2(g))rarr CO_(2(g))+Q is ………………….

In how many of the following entropy increases? {:((a) N_(2(g)) + 3H_(2(g)) rarr 2NH_(3(g)),(b)PCl_(5(g)) rarr PCl_(3(g)) + Cl_(2(g))),((c ) H_(2)O_((s)) rarr H_(2)O_((g)),(d)H_(2)O_((l)) rarr H_(2)O_((g))),((e ) 2NaHCO_(3(s)) rarr Na_(2)CO_(3(s)) + H_(2)O_((g)) + CO_(2(g)),(f ) NH_(2)CO_(2)NH_(4(s)) rarr 2NH_(3(g)) + CO_(2(g))),((g) H_(2)O_((l)) rarr H_(2)O_((s)),(h) CO_(2(s)) rarr CO_(2(g))):}

Nitric acid can be produced from NH_(3) in three step process I) 4NH_(3(g))+5O_(2(g))rarr4NO_((g))+6H_(2)O_((g)) II) 2NO_((g))+O_(2(g))rarr2NO_(2(g)) III) 3NO_(2(g))+H_(2)O_((l))rarr2HNO_(3(aq))+NO_((g)) % yield of I, II, III reaction are respectively 50%, 60% and 80%. Then how much volume of NH_(3(g)) at STP is required to produce 2.25 gm of HNO_(3) .

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

The enthalpy for the following reaction (at 25^(@)C are given below): (i) ½H_(2(g)) + ½ O_(2(g)) rarr OH_((g)) = 10.06 Kcal (ii) H_(2(g)) rarr 2H_((g)) 104.18 Kcal (iii) O_(2(g)) rarr 2O_((g)) 118.32 Kcal Calculate the O-H bond energy in the hydroxyl radical (give your answer in terms of 10^(5) cal)

Which one of the following equations is correct for the reaction N_(2)(g) + 3H_(2)(g) to 2NH_(3)(g) ?