Home
Class 11
CHEMISTRY
A mixture of HCOOH and H(2) C(2) O(4) i...

A mixture of HCOOH and `H_(2) C_(2) O_(4)` is heated with conc. `H_(2)SO_(4).` The gas produced is collected and on treating with KOH solution the volume of the gas decreases by `(1)/(6)th.` Calculate molar ratio of two acids in original mixture.

A

`3:1`

B

`4:1`

C

`2:1`

D

`1:2`

Text Solution

Verified by Experts

The correct Answer is:
B
`HCOOH overset("H_(2) SO _(4)) underset(Delta ) to H _(2) + CO , H _(2) C _(2) O _(4) overset( H _(2) S O _(4)) underset( Delta ) to H _(2) O + CO + CO _(2)`
Let a mole HCOOH and b mole of `H _(2) C _(2) O _(4)` are present in original mixture
`therefore ` Mole of CO formed =a ( from HCOOH) + b ( form `H _(2) C_(2) O _(4))`
Mole of `CO_(2)` formed= b (from `H _(2) C _(2) O _(4))`
Total mole of gass `= a + b + b = a + 2b`
`therefore CO _(2)` is absorbed by KHO and volume of reduces by `(1)/(6) therefore `Mole of `CO _(2) = (1)/(6) (a + 2b)`
`b =(1)/(6) (a + 2b) therefore a//b = 4 therefore a :b:: 4:1`
Promotional Banner

Topper's Solved these Questions

  • SOME BASIC CONCAPTS OF CHEMISTRY

    BRILLIANT PUBLICATION|Exercise LEVEL-III (Multiple Correct Answer Type)|8 Videos

  • SOME BASIC CONCAPTS OF CHEMISTRY

    BRILLIANT PUBLICATION|Exercise LEVEL-III (Numerical type)|9 Videos

  • SOME BASIC CONCAPTS OF CHEMISTRY

    BRILLIANT PUBLICATION|Exercise LEVEL-II|50 Videos

  • S-BLOCK ELEMENTS

    BRILLIANT PUBLICATION|Exercise LEVEL-III (Linked Comprehension Type)|9 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    BRILLIANT PUBLICATION|Exercise LEVEL-I|55 Videos

Similar Questions

Explore conceptually related problems

When carbon is heated with con. H_2SO_4 the gas liberated is/are:

Aniline is heated with K_(2)Cr_(2)O_(7) and H_(2)SO_(4) . The product is

250mL of 0.2M H_(2)SO_(4) is mixed with 100mL of 0.5M H_(2)SO_(4) . What is the molarity of the resulting solution?

A mixture of gases contains H_(2) and O_(2) in the ratio of 1 : 4 (w/w). What is the molar ratio of the two gases in the mixture?

The molality of an H_(2)SO_(4) solution is 9. The weight of the solute in 1 kg H_(2)SO_(4) solution is:

A mixture of 2.3 g formic acid and 4.5 g oxalic acid is treated with conc. H_(2)SO_(4) . The evolved gaseous mixture is passed through KOH pellets. Weight (in g) of the remaining product at STP will be

The reaction of saturated solution of Na_(2)Cr_(2)O_(7) with concentrated H_(2)SO_(4)

10 mL of conc. H_(2)SO_(4) (18M) is diluted to 10 L. the approximate strength of the acid would be:

The alcohol that will not produce alkene on heating with conc. H_(2)SO_(4) is