ThermochemistryHard
Question
Oxidising power of chlorine in aqueous solution can be determined by the parameters indicated below:
The energy involved in the conversion of
Cl2(g) to Cl-(g)
(using the data, ᐃdissHCl2- = 240 k J mol-1, ᐃegHCl- = - 349 k J mol-1 ᐃhydHCl- = - 381 k J mol -1) will be
The energy involved in the conversion of
Cl2(g) to Cl-(g)(using the data, ᐃdissHCl2- = 240 k J mol-1, ᐃegHCl- = - 349 k J mol-1 ᐃhydHCl- = - 381 k J mol -1) will be
Options
A.+152 kJmol-1
B.-610 kJmol-1
C.-850 kJmol-1
D.+ 120 kJmol-1
Solution
For the process 
Cl2(g) → Claq-
ᐃH =ᐃHdiss of Cl2 + ᐃegCl + ᐃhydCl-
= +
- 349 - 381
= - 610 kJ mol-1
Cl2(g) → Claq-ᐃH =
ᐃHdiss of Cl2 + ᐃegCl + ᐃhydCl- = +
- 349 - 381= - 610 kJ mol-1
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