Home
Class 12
CHEMISTRY
Delta H("fusion") of a substance is 'x' ...

`Delta H_("fusion")` of a substance is 'x' and `Delta H_("vap")` is 'y', then `Delta H_("sublimation")` will be

A

x + y

B

x - y

C

x/y

D

y/x

Text Solution

Verified by Experts

The correct Answer is:
A
`"Solid" overset("fusion")rarr "Liquid" " " Delta H_("fusion")=x`
`"Liquid" overset("vaporisation")rarr "Gas" " " Delta H_("vap")=y`
`"Solid" overset("sublimation")rarr "Gas" " " Delta H_("sub")`
So, `Delta H_("sub")=Delta H_("fusion")+Delta H_("vap.,")=Delta H_("sub")= x+y`.
Promotional Banner

Topper's Solved these Questions

  • AIIMS 2006

    AIIMS PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos

  • AIIMS 2008

    AIIMS PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos

Similar Questions

Explore conceptually related problems

In which of the following process of neutralization is the magnitude of Delta H_("neutralization") less than that of Delta H_("ionization") of water ?

Why Delta H_(f)^(@) of elements is zero?

From the following data, mark the option (s) where Delta H is correctlt written for the given reaction. Given H^(+)(aq) + OH^(-)(aq) rarr H_(2)O(l), Delta H = -57.3 kJ Delta H_("solution") of HA(g) = -70.7kJ/mol Delta H_("solution") of BOH(g) = 20kJ/mol Delta H_("ionization") of HA = 15 kJ/mol and BOH is a strong base Reaction Delta H_(r)(kJ//mol)