Home
Class 11
CHEMISTRY
If S(g)+e^(-) rarr S^(1-)(g), Delta H = ...

If `S(g)+e^(-) rarr S^(1-)(g), Delta H = -207.6 KJ`
`S(g) + 2e^(-) rarr S^(2-)(g), Delta H = +335.2 KJ`.
The enthalpy for the reaction
`S^(1-)(g)+e^(-) rarr S^(2-)(g)`:

A

`+127.6KJ`

B

`-127.6KJ`

C

`+542.8KJ`

D

`-641.8KJ`

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaH=H_(p)-H_(R)`
Promotional Banner

Similar Questions

Explore conceptually related problems

If 2AI(s) +1(1)/(2) O_(2)(g) rarr AI_(2)O_(3)(s), DeltaH =- 1667.8 kJ H_(2)(g) +(1)/(2)O_(2)(g) rarr H_(2)O(l), DeltaH =- 285.9 kJ Calculate DeltaH for the reaction AI_(2)O_(3)(s) rarr 2AI(s) +1(1)/(2)O_(2)(g)

S_R + O_2(g) rarr SO_2(g), Delta H =-71.1 kcal m S_M + O_2(g) rarr SO_2(g), Delta H =-71.7 kcal Thus Delta H for the consversion of S_R rarr S_M is

For the system S (s) + O_(2)(g) rarr SO_(2)(g) ?

H_(2)(g)+I_(2) (s) rarr 2HI (g), DeltaH=51.9 KJ/mole H_(2)(g)+I_(2)(g) rarr 2 HI (g), DeltaH=-9.2 kJ/mole. the heat of reaction of I_(2)(s) rarr I_(2) (g)

Using the following thermochemical equations : S("rhombic") + 3/2 O_(2)(g) rarr SO_(3)(g), " "Delta H = - 2x kJ mol^(-1) II. SO_(2)(g) + 1/2 O_(2)(g) rarr SO_(3)(g), " "Delta H = -Y kJ mol^(-1) Find out the heat of formation of SO_(2)(g) in kJ mol^(-1) .

Delta S for the reaction , MgCO_(3)(s)rarr MgO(s)+CO_(2)(g) will be :

The following teo reaction are known : Fe_(2)O_(3)(s)+3CO(g)rarr2Fe(s)+3CO_(2)(g) , Delta H= -26.8 kJ FeO(s)+CO(g)rarr Fe(s)+CO_(2)(g) , Delta H = - 16.5 kJ Correct target equation is Fe_(2)O_(3)(s)+CO(g)rarr 2FeO(s)+CO_(2)(g), Delta H = ?