Home
Class 11
CHEMISTRY
For the chemical equilibrium, CaCO(3)(...

For the chemical equilibrium,
`CaCO_(3)(s) hArr CaO(s)+CO_(2)(g)`
`Delta_(r)H^(ɵ)` can be determined from which one of the following plots?

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
A

For the reaction,
`CaCO_(3(s))hArrCaO(s) + C O_(2(g))`
`K_(p) = P_(CO_(2))` and `K_(C) = [CO_(2)]`
`.: [CaCO_(3)] = 1` and `[CaO] = 1` for solids]
According to Arrhenius equation we have
`K = Ae^(-Delta H_(r)^(@)//RT)`
Taking logarithm, we have
log `K_(p)` = log `A - (Delta H_(r)^(@))/(RT(2.303))`
This is an equilibrium of straight line. When log `K_(p)` is plotted against `1//T` , we get a straingth line.

The intercept of this line = log A, slope = `-Delta H_(r)^(@)//2.303R` Knowing the value of slope form the plot and universal gas constant R, `Delta H_(r)^(@)` can be calculated. Equation of straight line: `Y = mx + C` . Here,
log `K_(p) = -(Delta H_(r)^(@))/(2.303R) ((1)/(T))+ log A`
Y m x C
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • CHEMICAL EQUILIBRIUM

    A2Z|Exercise Assertion - Reasoning Questions|5 Videos
  • CHEMICAL BONDING AND MOLECULAR STRUCTURE

    A2Z|Exercise Section D - Chapter End Test|30 Videos
  • CHEMICAL THERMODYNAMICS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

For CaCO_(3)(s) hArr CaO(s)+CO_(2)(g), K_(c) is equal to …………..

For the reaction at equilibrium CaCO_(3) hArr CaO(s) + CO_(2)(g) What CaO(s) is removed reaction moves in forward direction.

Knowledge Check

  • For the chemical equilibrium , CaCO_3 (s) hArr CaO (s) + CO_(2) (g) , Delta_(r) H^(@) can be determined from which of the following plots ?

    A
    B
    C
    D
  • For the chemical equilibrium CaCO_(3)(s)hArrCaO(s)+CO_(2)(g), DeltaH^(@) can be determined from which one of the following graphs?

    A
    B
    C
    D
  • For the chemical equlibrium, CaCo_(3(s))hArrCaO(s)+CO_(2)(g),DeltaH_(r)^(@) can be cetermined from which one of the following plots

    A
    B
    C
    D
  • Similar Questions

    Explore conceptually related problems

    For the reaction : CaCO_(3) (s) hArr CaO (s) + CO_(2) (g)

    For the reaction CaCO_(3(s)) hArr CaO_((s))+CO_(2(g))k_p is equal to

    CaCO_3(s) hArr CaO(s) + CO_2(g), DeltaH =110 kJ The pressure of CO_2 :

    For the reaction CaCO_(3)(s)hArrCaO(s)+CO_(2)(g) the equilibrium amount of CO_(2) can be increased by :

    For the reaction CaCO_(3(s)) rarr CaO_((S))+CO_(2(g)) the entropy