Banner 0
Banner 1
Banner 2
Banner 3
Banner 4
Banner 5

Q.

The enthalpies of combustion of S(s),SO2(g) and H2(g) are 298.2,98.7 and 287.3 kJ mol1. If the enthalpy of reaction SO3(g)+H2O(l)H2SO4(l) is 130.2 kJ mol1the enthalpy of formation of H2SO4(1) would be

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya

a

650.3kJmol1

b

554.2kJmol1

c

814.4kJmolI

d

435.5kJmol1

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Given data are

S(s)+O2(g)SO2(g)    ΔH=298.2kJmol1SO2+12O2(g)SO3(g)     ΔH=98.7kJmol1H2(g)+12O2(g)H2O(l)    ΔH=287.3kJmol1SO3(g)+H2O(l)H2SO4(l)     ΔH=130.2kJmol1

The formation of H2SO4(l) implies the reaction H2(g)+S(s)+2O2(g)H2SO4(l)

This reaction is obtained by adding the above four reactions. Hence, the enthalpy of formation of H2SO4(1) is ΔH=(298.2+98.7+287.3+130.2) kJ mol1=814.4 kJ mol1

Watch 3-min video & get full concept clarity

Best Courses for You

JEE

JEE

NEET

NEET

Foundation JEE

Foundation JEE

Foundation NEET

Foundation NEET

CBSE

CBSE

score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon