Q10 of 47 Page 1

(a) Write the reaction that occurs at anode on electrolysis of concentrated H2SO4 using Platinum electrodes.

(b) What is the effect of temperature on ionic conductance?


(a) The reaction that takes place at anode on electrolysis of concentrated H2SO4 using Platinum electrodes is


2SO42- S2O82- + 2e-


(b) On increasing temperature, more is the dissociation of ions which increases the ionic mobility of ions due to which ionic conductance also increases. So, temperature is directly proportional to ionic conductance.


More from this chapter

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8

Complete and balance the following equations-

(a) S + H2SO4 (conc.)


(b) PCl3 + H2O


OR


Write balanced chemical equations involved in the following reactions-


(a) Chlorine gas reacts with cold and dilute NaOH.


(b) Calcium phosphide is dissolved in water.


 9

Draw structures of the following:

(a) XeF4 (b)S2O82-


 18

Give reasons for the following:

(a) O-O single bond is weaker than S-S single bond.


(b) Tendency to show -3 oxidation state decreases from Nitogen(N) to Bismuth(Bi).


(c) Cl2 acts as a bleaching agent.


 19

Write the structure of Monomers used to obtain the following polymers:

(a) Buna-S


(b) Glyptal


(c) Nylon-6


OR


(a) Arrange the following polymers in increasing order of their intermolecular forces: Polyvinylchloride, Neoprene, Terylene.


(b) Write one example each of


(i) Natural Polymer


(ii) Thermosetting polymer


(c) What is the significance of numbers 6,6 in Nylon-6,6?