Home
Class 12
CHEMISTRY
Enthalpy of formation of compound is...

Enthalpy of formation of compound is

A

always positive

B

always negative

C

can be either negative or zero

D

can be positive or negative

Text Solution

Verified by Experts

The correct Answer is:
D
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • THERMOCHEMISTRY

    MOTION|Exercise EXERCISE -1 SECTION C|1 Videos

  • THERMOCHEMISTRY

    MOTION|Exercise EXERCISE -1 SECTION D|2 Videos

  • THERMOCHEMISTRY

    MOTION|Exercise EXERCISE -1 SECTION - A|5 Videos

  • SURFACE CHEMISTRY

    MOTION|Exercise Exercise - 3 (Level-II)|12 Videos

  • THERMODYNAMICS

    MOTION|Exercise EXERCISE - 4 (LEVEL - II)|19 Videos

Similar Questions

Explore conceptually related problems

The Enthalpy of formation is the change in enthalpy accompanying the formation of a substance from its elements at 298 K and 1 atm pressure. Since the enthalpies of elements in their most stable state are taken to be zero, the enthalpy of formation of compunds is

The enthalpies of elements in their standard states are taken as zero. Hence, the enthalpy of formation of a compound :

Knowledge Check

  • Enthalpy of formation of a compound is equal in magnitude to

    A
    Enthalpy of that reaction
    B
    Enthalpy of dissociation
    C
    Enthalpy of combustion
    D
    Enthalpy of solution

  • The enthalpy of formation of a compound is equal in magnitude but of opposite sign to the enthalpy of decomposition of that compound under the same conditions. This law was presented by

    A
    Hess
    B
    Le-chatelier's
    C
    Kirchhoff
    D
    Lavoisier and Laplace

  • "The enthalpy of formation of a compound is equal in magnitude but of opposite sign to the enthalpy of decomposition of that compound under the same conditions". This law was presented by:

    A
    Hess
    B
    Le Chatelier
    C
    Kirchhoff
    D
    Lavoisier annd Laplace

    • Similar Questions

    Explore conceptually related problems

    The enthalpy of formation of compounds A, B, C and D are -94.00, +34.00, +7.00 and -12.00 kcal per mole respectively. The correct order of increasing stability of the compounds is :

    The enthalpies of elements in their standard states are taken as zero. The enthalpy of formation of a compound

    The enthalpies of elements in their standard states are takeen as zero. The enthalpy of formation of a compound

    The enthalpies of elements in their standard states are taken as zero.The enthalpy of formation of a compound

    The enthalpy of elements in their standard atates are taken as zero .The enthalpy of formation of a compound:

    Home
    Profile