Home
Class 11
CHEMISTRY
The theoretically computed equilibrium c...

The theoretically computed equilibrium constant for the polymerisation of formaldehyde to glucose in aqueous solution :
`6HCHO hArr C_6H_12O_6` is `1.0xx10^24` If 1 M-solution of glucose was taken, what should be the equilibrium concentration of formaldehyde ?

A

`1.6 xx 10^(22) M`

B

`1.6 xx 10^(-4) M`

C

` 6 sqrt(6xx10^(4)) xx 10^(3) M`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
A very high value of K indicates that amount of glucose dissociated into formaldehyde is negligible. Therefore , at equilibrium
`[C_(6)H_(12)O_(6)]=1.0 mol L^(-1)`
`K([C_(2)H_(12)O_(6)])/([HCHO]^(6))`
`6xx10^(22)=(1)/([HCHO]^(6))`
`[HCHO]^(6)=(1)/(6xx10^(22))`
`implies [HCHO]=1.6 xx 10^(-4) M`
Promotional Banner

Topper's Solved these Questions

  • PHYSICAL AND CHEMICAL EQUILIBRIA

    DINESH PUBLICATION|Exercise REASON ASSERTION TYPE MCQs|10 Videos

  • P BLOCK ELEMENTS (GROUP 13 AND 14 )

    DINESH PUBLICATION|Exercise Straight obj.|17 Videos

  • RATES OF REACTIONS AND CHEMICAL KINETICS

    DINESH PUBLICATION|Exercise Ultimate Preparatory Package|29 Videos

Similar Questions

Explore conceptually related problems

Formaldehyde polymerizes to form glucose according to the reaction, 6HCHO rarr C_(6)H_(12)O_(6) The theoretically computed equilibrium constant for this reaction is found to be 6 xx 10^(22) If 1M solution of glucose dissociates according to the above equilibrium, the concentration of formaldehyde in the solution will be :

Estimste the lowering of vapour pressure due to the solute (glucose) in a 1.0 M aqueous solution at 100^(@)C :

If 18 gram of glucose (C_6H_(12)O_6) is present in 1000 gram of an aqueous solution of glucose it is said to be-