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Determination of the molar mass of aceti...

Determination of the molar mass of acetic acid in benzene using freezing point depression is affected by :

A

association

B

dissociation

C

complex formation

D

partial ionization

Text Solution

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The correct Answer is:
A
Due to hydrogen bonding acetic acid dimerise in benzene
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The solution of acetic acid in benzene contains

Each question contains STATEMENT-I(Assertion) and STATEMENT-2(Reason).the statement carefully and mark the correct answer according to the instruction given below: STATEMENT - 1 : The molecular mass of acetic acid determined by depression in freezing point method in benzene and water was found to be differrent. STATEMENT - 2 : Water is polar and benzene is non-polar.

Read the paragraph carefully and answer the following questions: Mole fraction of acetic acid in benzene given a solution having freezing point 277.4K. Freezing point of benezene is 278.4K and heat of fusion of benzene is 10.042 kJ/mol. If molarity of solution is equal to molality, and acetic acid is found in equilibrium with it dimmer than answer the following based upon above data The degree of association according to above data acetic acid should be

Read the paragraph carefully and answer the following questions: Mole fraction of acetic acid in benzene given a solution having freezing point 277.4K. Freezing point of benezene is 278.4K and heat of fusion of benzene is 10.042 kJ/mol. If molarity of solution is equal to molality, and acetic acid is found in equilibrium with it dimmer than answer the following based upon above data Calculate the equilibrium constant for dimerisation of acetic acid

Calculate the molar mass of sodium acetate.

From a measurement of the freezing point depression of benzene, the molecular weight of acetic acid in a benzene solution was determined to be 100 . The percentage association of acetic acid is

Statement-1 : The observed molar mass of acetic acid in benzene is more than the normal molar mass of acetic acid. Statement-2 : Molecules of acetic and dimerise in benzene due to hydrogen bonding.

Consider the following statements and arrange in order of true/false as given in the codes. S_1 : Vapour pressure is a colligative property. S_2 :Freezing point of a solution is always lower than of the pure solvent S_3 : Acetic acid undergoes association in benzene The molar mass of acetic acid, determined by elevation of boiling point is always higher than its normal molar mass. S_4 : Osomotic pressure measurements can be used for determination of molar mass of polymers.

Derive a formula determining molecular mass from depression in freezing point.

Read the paragraph carefully and answer the following questions: Mole fraction of acetic acid in benzene given a solution having freezing point 277.4K is 0.02. Freezing point of benezene is 278.4K and heat of fusion of benzene is 10.042 kJ/mol. If molarity of solution is equal to molality, and acetic acid is found in equilibrium with it dimmer than answer the following based upon above data What should be the molality of the solution formed

ALLEN-ALKENE, ALKANE & ALKYNE -EXERCISE-5[A]
  1. The optically inactive compound from the following is :-

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  3. In the presence of a small amount of phosphorous, aliphatic carboxylic...

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  4. Determination of the molar mass of acetic acid in benzene using freezi...

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  5. In the following squence of reactions "Toluene" overset(KMnO(4))(to)...

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  6. Reaction - Primary amine +CHCl(3)+KOHrarr product, here product will...

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  7. The compound formed in the positive test for nitrogen with the Lassaig...

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  8. Which one onf the following methods is neither for the synthesis nor f...

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  9. In the chemical reaction CH3CH2NH2+CHCl3+3KOHto(A), The +(B)+3H2O ...

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  10. In the chemical reactions the compounds (A) and (B) are .

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  11. In the chemical reactions the compounds (A) and (B) are .

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  12. Compound (A), C(8)H(9)Br, gives a white precipitate when warmed with a...

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  13. An organic compound A upon reacting with NH3 gives B. On heating B giv...

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  14. On heating an aliphatic primary amine with chloroform and ethanolic po...

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  15. Considering the basic strength of amines in aqueous solution, which on...

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  16. Arrange the following amines in the order of increasing basicity :-

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  17. Which compound exhibits maximum dipole moment among the following ?

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  18. In the reaction : the product E is

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  19. In the Hofmann bromamide degradation reaction, the number of moles of ...

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  20. How will you distinguish between primary, secondary and tertiary amine...

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