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Calculate the mass of benzene that would...

Calculate the mass of benzene that would be required to produce a current of one ampere (assume current efficiency `50%`) for three hours from the following data :
`C_(6)H_(6) + (15)/(2)O_(2) rarr 6CO_(2) + 3H_(2)O`

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The correct Answer is:
`0.582 g ;`
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Calculate the standard Gibbs free energy change from the free energies of formation data for the following reaction: C_(6)H_(6)(l) +(15)/(2)O_(2)(g) rarr 6CO_(2)(g) +3H_(2)O(g) Given that Delta_(f)G^(Theta) =[C_(6)H_(6)(l)] = 172.8 kJ mol^(-1) Delta_(f)G^(Theta)[CO_(2)(g)] =- 394.4 kJ mol^(-1) Delta_(f)G^(Theta) [H_(2)O(g)] =- 228.6 kJ mol^(-1)

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Calculate the standard enthalpy of the reaction, 2C_(("graphite")) + 3 H_(2(g)) to C_(2) H_(6(g)) Delta H^(@) = ? from the following Delta H^(@) values: (a) C_(2) H_(6(g)) + (7)/(2) O_(2(g)) to 2CO_(2(g)) + 3H_(2) O_((1)) Delta H^(@) = - 1560 kJ (b) H_(2(g)) + (1)/(2) O_(2(g)) to H_(2) O_((1)) Delta H^(@) = - 285.8 kJ (c ) C_(("graphite")) + O_(2(g)) to CO_(2(g)) Delta H^(@) = - 393.5 kJ

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Calculate standard free energy change from the free energy of formation data for the following reaction, C_(6)H_(6)(l)+(15)/(2)O_(2)(s)to 6CO_(2)(g)+3H_(2)O(g) . Delta_(f)G^(theta)[C_(6)H_(6)(l)]=172.8 kJ/mol Delta_(f)G^(theta)[CO_(2)(g)]=-394.4 kJ/mol Given that. Delta_(f)G^(theta)[CO_(2)(g)]=394.4 kJ/mol Delta_(r )G^(theta)[H_(2)O(l)]=-228.6 kJ/mol

P BAHADUR-ELECTROCHEMISTRY-Exercise (9) ADVANCED NUMERICAL PROBLEMS
  1. Calculate the mass of benzene that would be required to produce a curr...

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  2. A current of 0.5 A is passed through acidulated water for 30 minute. C...

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  3. A copper cell containing 5% solution of CuSO(4).5H(2)O and a silver ce...

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  4. Some quantity of electricity being used to liberate iodine (at anode) ...

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  5. A test for complete romovel of Cu^(2+) ions form a solution of Cu((aq....

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  6. A Zn rod weighing 25g was kept in 100 mL of 1M CuSO(4) solution. After...

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  7. Assume that impure copper contains only Fe, Au and Ag as impurities. A...

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  8. 50 mL of 0.1 M CuSO(4) solution is electrolysed using Pt electrodes wi...

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  9. An oxide of metal ("at. wt. "= 112) contain 12.5% O(2) by weight. The ...

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  10. 19g fused SnCl(2) was electrolysed using inert electrodes. 0.119g Sn w...

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  11. A lead storage cell is discharged which causes the H(2)SO(4) electroly...

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  12. Two litre solution of a buffer mixture containing 1.0 M NaH(2)PO(4) an...

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  13. A current of 40 microampere is passed through a solution of AgNO(3) fo...

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  14. Suppose a fully charged battery containes 1.50 litre of 5.0 M H(2)SO(4...

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  15. In an analytical determination of aresenic , a solution containing are...

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  16. Assuming that a constant current is delivered, how many kW-h of electr...

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  17. Find the e.m.f. of the following cell at 18^(@)C taking the degree of ...

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  18. If it is disreed to construct the following voltaic cell to have E(cel...

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  19. The e.m.f. of the obtained by combining Zn and Cu electrodes of Danie...

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  20. Calcualte the potential of an indicator electrode versus the standard ...

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  21. An electrode is prepared by dipping a silver strip into a solution sat...

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