ThermochemistryHard
Question
Find the bond energy of S−S bond from the following data.
C2H5 − S − C2H5(g): ΔHof = −148 kJ,
C2H5 − S − S − C2H5(g): ΔHof = −202 kJ,
S(g): ΔHof = 222 kJ
Options
A.276 kJ/mol
B.128 kJ/mol
C.168 kJ/mol
D.222 kJ/mol
Solution
$C_{2}H_{5} - S - C_{2}H_{5}(g) + S(g) \rightarrow C_{2}H_{5} - S - S - C_{2}H_{5}(g)$
$\Delta H = ( - 202) - \left\lbrack ( - 143) + 222 \right\rbrack = - 276\text{ kJ} $$$\text{B.E}\text{.}_{S - S} = 276\text{ kJ/mol}$$
Create a free account to view solution
View Solution FreeMore Thermochemistry Questions
From the following thermochemical equations, find out the bond dissociation enthalpy of CH3−H bond.CH3I(g) → CH3(g) + I(...The value of ΔfH° of U3O8(s) is –853.5 kJ mol–1. ΔH° for the reaction3UO2(s) + O2(g) → U3O8(s)is −76.00 kJ. The value of...From the following data, mark the option(s) where ᐃH is correctly written for the given reaction.Given : H+ (aq) +...(i) Cis - 2 - butene → trans - 2 - butene, ᐃH1(ii) Cis - 2 - butene → 1 - butene, ᐃH2(iii) Trans...For the equilibrium H2O(l) ⇋ H2O(g) at 1atm and 298 K :...