Home
Class 11
CHEMISTRY
Calculate DeltaHf^@ for the reaction CO2...

Calculate `DeltaH_f^@` for the reaction `CO_2(g) +H_2(g) to CO(g) + H_2O(g)` given that `DeltaH_f^0` for `CO_2(g),CO(g)` and `H_2O(g)` are -393.5 , -111.31 and `-242 "kJ mol"^(-1)` respectively.

Text Solution

Verified by Experts

Given
`DeltaH_f^0 CO_2 =-393.5 "kJ mol"^(-1)`
`DeltaH_f^0CO=-111.31 "kJ mol"^(-1)`
`DeltaH_f^0(H_2O)=-242 "kJ mol"^(-1)`
`CO_2(g) + H_2(g) to CO(g)+ H_2O(g)`
`DeltaH_r^0`=?
`DeltaH_r^0=sum (DeltaH_f^0)_"products" -sum(DeltaH_f^0)_"reactants"`
`DeltaH_r^0=[DeltaH_f^0 (CO)+DeltaH_f^0 (H_2O)]-[DeltaH_f^0 (CO_2)+DeltaH_f^0 (H_2)]`
`DeltaH_r^0`=[-111.31+(-242)]-[-393.5+(0)]
`DeltaH_r^0` =[-353.31]+393.5
`DeltaH_r^0` =40.19
`DeltaH_r^0=+40.19 "kJ mol"^(-1)`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • THERMODYNAMICS

    FULL MARKS|Exercise Additional Questions Solved (I)|39 Videos

  • THERMODYNAMICS

    FULL MARKS|Exercise Additional Questions Solved (II)|3 Videos

  • THERMODYNAMICS

    FULL MARKS|Exercise Textual Question Solved|46 Videos

  • SOLVED PAPER 13 (UNSOLVED)

    FULL MARKS|Exercise PART-II|9 Videos

Similar Questions

Explore conceptually related problems

Calculate Delta H_(f)^(0) for the reaction CO_(2)(g) + H_(2)(g) to CO(g) + H_(2)O(g) given that Delta H_(f)^(0)" for "CO_(2)(g), CO(g) and H_(2)O(g) are -393.5, -111.31 and -242 kJ "mol"^(-1) respectively.

Give the relation between enthalpy (H) and internal energy (U). Calculate Delta_(f)^(@) for the reactions. CO_(2(g))+H_(2(g))rarrCO_(g)+H_(2)O_(g) given that DeltaH_(f)^(@) for CO_(2(g))+CO_(g)and H_(2)O_(g) " are "-393.5-111.31 and -242 kJmol^(-1) respectively.

Knowledge Check

  • The K_(p)//K_(c) for the reaction, CO(g)+1/2O_(2)(g)hArrCO(g) is:

    A
    1
    B
    RT
    C
    `(RT)^(-1/2)`
    D
    `(RT)^(1/2)`

    • Similar Questions

    Explore conceptually related problems

    Calculate delta H_(r)^(0) for the reaction CO_(2)(g) + H_(2)(g) rarr CO(g) + H_(2)O(g) given that Delta H_(r)^(0) for CO_(2) (g), CO (g) and H_(2)O (g) are - 393.5, -111.31 and - 242 KJ mol^(-1) respectively.

    Calculate Delta H_(f)^(0) for the reaction CO_(2(g))+H_(2(g))rarr CO_((g))+H_(2)O_((g)) , given Delta H_(f)^(0) for CO_(2(g)),CO_((g)) and H_(2)O_((g)) are -393.5, -111.31 and -242 "Kj mol"^(-1) respectively.

    Calculate DeltaH_(f)^(0) for the reactions. CO_(2_((g)))+H_(2_((g)))rarrCO_(2_((g)))+H_(2)O_((g)) " given that "DeltaH_(f)^(0) " for " CO_(2_((g))),CO_((g))and H_(2)O_((g)) " are " -393.5,-111.31 and -242 " KJ.mol"^(-1) respectively .

    The standard entropy change Delta S_r^@ for CH_(4(g)) + 2O_(2(g)) to CO_(2(g)) + 2H_2O_((l)) is -242.98 JK^(-1) at 25^@C . Calculate the standard reaction enthalpy for the above reaction if standard Gibbs energy of formation of CH_(4(g)), CO_(2(g)) and H_2O_((l)) are -50.72, -394.36 and - 237.13 kJ mol^(-1) respectively.

    Calculate the standard heat of formation of propane, if its heat of combustion -2220.2 "KJ mol"^(-1) . The heats of formation of CO_(2(g)) and H_2O_((l)) are -393.5 and -285 kJ "mol"^(-1) respectively.

    Write the K_(c) for the reaction CO_(2)(g) + H_(2)O(l) hArr H_((aq))^(+) + HCO_(3)^(-)

    The standard entropy change for the reaction C_3H_(6(g)) + 9/2O_(2(g)) to 3CO_(2(g)) + 3H_2O_((l)) is – 339.23 JK-1 at 25^@C . Calculate the standard reaction enthalpy change if the standard Gibbs energy of formation of C_3H_(6(g)), CO_(2(g)) and H_2O_((l)) are 62.78, – 394.36 and –237.13 kJ. "mol"^(–1) respectively.

    Home
    Profile