In the following changes, state whether order has increased or decreased and consequently the direction of change of entropy of the system?
i) Steam `rarr` water
ii) `H_2 O(l) rarr H_2 O(s)`
iii) Normal egg `rarr` hard boiled egg.
iv) Dry ice (solid carbon dioxide) `rarr CO_2(g)`.

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)

In which of the following ionization processes, the bond order has increased and the magnetic behaviour has changed? : N_2rarrN_2^(+) , C_2rarrC_2^(+) , NO rarr NO^(+) , O_2 rarr O_2^(+)

Write the oxidation state of each element and identify the oxidising agent and reducing agent in the following reaction : H_2S (g)+ Cl_2(g)rarr 2HCl(g)+ S(s)

Predict in which of the following, entropy increases:(iii) 2NaHCO_3(s)rarrNa_2CO_3(s)+CO_2(g)+H_2O(g) .

Rate of a reaction is the change in concentration of any one of the reactant or any one of the products in unit time. N_2O_(5(g)rarr2NO(2(g)+O_(2(g) is a first order recation find the unit of K.

Predict in which of the following, entropy increases:(iii) H_2(g)rarr 2H(g) .

Predict the sign of entropy change for each of the following changes of state a) 'Hg(l) rarr Hg(g)^circ' b) 'AgNO_3(s) rarr AgNO_3(aq)' c) 'I_2(g) rarr I_2(s)' d) 'C' (graphite) 'rarr C' (diamond)

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'