Three equations are given below. After studying it, write about Acid rain.
(1) `CO_2(g)+H_2O(l)rightarrow2H^+(aq)+CO_3^(2-)(aq)`
(2) `2SO_2(g)+O_2(g)+2H_2O(l)rightarrow2H_2SO_4(aq)`
(3) `4NO_2(g)+O_2(g)+2H_2O(l)rightarrow2HNO_3(aq)`

Predict the sign of entropy change in the following reactions. i) O_2(g)+2 SO_2(g) rarr 2 SO_3(g) ii) 2 H_2(g)+O_2(g) rarr 2 H_2 O(g)

For which of the reactions, Delta S is not positive : I_2(s) rarr I_2(g) , CuO(s)+H_2(g) rarr Cu(s)+H_2 O(l) , 2 O_3(g) rarr 3 O_2(~g) , CH_4(g)+2 O_2(g) rarr CO_2(g)+2 H_2 O(g)

Consider the reactions. a) 6 CO_2(g)+6 H_2 O(l) rarr C_6 H_(12) O_6(aq)+6 O_2(g) b) O_3(g)+H_2 O_2(l) rarr H_2 O_2(l)+2 O_2(g) Why it is more appropriate to write these reactions as: a) 6 CO_2(g)+12 H_2 O(l) rarr C_6 H_12 O_6(aq)+6 H_2 O(l)+6 O_2(g) b) O_3(g)+H_2 O_2(l) rarr H_2 O(l)+O_2(g)+O_2(g) Also suggest a technique to investigate the path of the above (a) and (b) redox reactions.

Complete the chemical reactions MnO_4(aq)+H_2O_2(aq)rarr

Which of the following reactions will get affected by increasing of pressure? Also mention whether change will cause the reaction to go into forward or backward direction? i) 'COCl_2(g) hArr CO_(g)+Cl_2(g)' ii) 'C H_4(g)+2 S_2(g) hArr CS_2(g)+2 H_2 S_(g)' iii) 'CO_2(g)+C_(s) hArr 2 CO_(g)' iv) '2 H_2(g)+CO_ th ) hArr CH_3 OH_(g)' 'v) CaCO_3(s) hArr CaO_(s)+CO_2(g)' vi) '4 NH_3( g)+5 O_2(g ) hArr 4 NO_(g)+6 H_2 O_(g'

Identify the oxidants and reductants in the following reactions. a. CH_4(g)+4 Cl_2(g) rarr C Cl_4(g)+4 HCl(g) b. 2 H^+(aq)+MnO_2(s)+C_2 H_2 O_4(aq) rarr Mn^(2+)(aq)+2 CO_2(g)+2 H_2 O(l) c. Cl_2(g)+2 Br^-(aq) rarr 2 Cl^-(aq)+Br_2(aq)

Calculate the enthalpy of formation of CH_4 from the following data: C_(s) + O_(2(g)) rarr CO_2(g) DeltaH = -393.5 kJ//mol 2H_(2(g) + O_(2(g)) rarr 2H_2O_(l) DeltaH = -571.8 kJ//mol CH_4(g)+ 2O_(2(g)) rarr CO_2(g) +2H_2O_(l) DeltaH = -890.3 kJ//mol

Balance the following equation by the half reaction method. Fe^(2+) (aq) + Cr_2O_7^(2-) (aq) +H^(+) (aq) rarr Fe^(3+) (aq) + Cr^(3+) (aq) +H_2O (I)

Consider the reactions: a) H_3 PO_2(aq)+4 AgNO_3(aq)+2 H_2 O(l) rarr H_3 PO_4(aq)+4 Ag(s)+4 HNO_3(aq) b) H_3 PO_2(aq)+2 CuSO_4(aq)+2 H_2 O(l) rarr H_3 PO_4(aq)+2 Cu(s)+H_2 SO_4(aq) c) C_6 H_5 CHO(l)+2[Ag(NH_3)_2]^+(a, q)(+3) OH^-(aq) rarr C_6 H_5 COO^-(aq)+2Ag(s)+4 NH_3(a q)+2 H_2 O(l) d) C_6 H_5 CHO(l)+2Cu^(2+)(aq)+5 OH^-(aq) rarr No change observed. What inference do you draw about the behaviour of Ag^+ and Cu^((2+)) from these reactions?