Among the hydrides of Group 15 elements, which have the (a) lowest boiling point? (b) maximum basic character? (c) highest bond angle? (d) maximum reducing character?
(a) Suggest a quantitative method for estimation of the gas which protects us from U.V. rays of the sun. (b) Nitrogen oxides emitted from the exhaust system of supersonic jet aeroplanes slowly deplete the concentration of ozone layer in upper atmosphere. Comment.
(i) Draw the structure of phosphinic acid (H3PO2). (ii) Write a chemical reaction for its use as reducing agent.
What happens when (i) (NH4)2Cr2O7 is heated? (ii) PCl5 is heated? (iii) H3PO3 is heated? Write the equations involved.
What happens when white phosphorus is heated with concentrated NaOH solution in an inert atmosphere of CO2 ?
Using the standard electrode potentials given in the Table 8.1, predict if the reaction between the following is feasible : (a) Fe^3+(aq) and I^–(aq) (b) Ag^+(aq) and Cu(s) (c) Fe^3+ (aq) and Cu(s) (d) Ag(s) and Fe^3+(aq) (e) Br2(aq) and Fe^2+(aq).
Calculate the volume of 0.1 M NaOH solution required to neutralize the solution produced by dissolving 1.1 g of P4O6 in water.
Write balanced equations for the following reactions : (a) P4 + NaOH + H2O → (b) As4 + Cl2(excess) → (c) P4O10 + H2O → (d) Ca3P2 + H2O → (e) POCl3 + H2O → (f) HgCl2 + PH3 → (g) Ag + PCl5 →
Complete the reactions : (i) NH4NO3 (s) →^Heat (ii) N2O + NaNH2 → (iii) Cu^2+ (aq) + NH3 (aq.) → (iv) CuO + NH3 →