Home
Class 11
CHEMISTRY
The enthalpies of neutralization of a we...

The enthalpies of neutralization of a weak acid HA and a weak acid HB by NaOH are `-6900` cal/equivalent at `-2900` cal/equivalent, respectively. When one equivalent of NaOH is added to a solution containing one equivalent of HA and one equivalent of HB, the enthalpy change was `-3900` cal. The ratio in which the base distributed between HB and HA is x/y then x + y is

Text Solution

Verified by Experts

The correct Answer is:
7
`(x) (2.9) + (1-x) (6.9) = 3.0 rArr x= 3//4`
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (PRACTICS SHEET (ADVANCED) STRAIGHT OBJECTIVE TYPE QUESTIONS)|17 Videos

  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (PRACTICS SHEET (ADVANCED) MORE THAN ONE CORRECT ANSWER TYPE QUESTIONS)|5 Videos

  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL - II LECTURE SHEET (ADVANCED) MATRIX MATCHING TYPE QUESTIONS)|2 Videos

  • CHEMICAL THERMODYANMICS

    AAKASH SERIES|Exercise Questions For Descriptive Answers|28 Videos

  • ELECTRON MIGRATION EFFECTS

    AAKASH SERIES|Exercise QUESTIONS FOR DESCRIPTIVE ANSWERS|10 Videos

Similar Questions

Explore conceptually related problems

The enthalpy of neutralization of four acids HA, HB ,HC and HD with NaOH are -13, -12, -11 ,-10 kcal/ mol. Which salt has maximum degree of hydrolysis ?

A buffer solution contains a weak acid HA and A . When small quantity of NaOH is added, to keep p^(H) as constant. which of the following reaction takes place?

The equivalent weights of oxidising and reducing agents can be calculated by the number of electrons gained or lost. The equivalent weight of an oxidising agent is the number of parts by weight of the substance which gains one electron. Thus, it is equal to the molecular weight of the substance divided by the number of electrons gained in the balanced chemical equation. Similarly, equivalent weight of a reducing agent is equal to the molecular weight divided by the number of electrons lost as represented in the balanced chemical equation Equivalent weight of MnO_(4)^(-) in acidic, basic and neutral media are in the ratio of

A tablet of vitamin 'C' is analysed for its ascorbic acid content. One tablet reacts exactly with 20ml of 0.1 N NaOH solution. The equivalent weight of ascorbic acid is 176. The tablet contains ___ mg of ascorbic acid

Equivalent conductivity of a weak acid HA at infinite dilution is 390 S cm^(2) eq^(-1) . Conductivity of 1xx10^(-3) N HA solution is 4.9xx10^(-5) S cm^(-1) . Calculate the extent of dissociation and dissociation constant of the acid.

A tablet of vitamin 'C' is analysed for its ascorbic acid content. One tablet reacts exactly with 20ml of 0.1 N NaOH solution. The equivalent weight of ascorbic acid is 176. The tablet contains ________ mg of ascorbic acid