Question

Equivalent mass of sugar is:
(A) ${\displaystyle \frac{M}{11}}$
(B) ${\displaystyle \frac{M}{12}}$
(C) ${\displaystyle \frac{M}{22}}$
(D) None of these

Answer 1

Hint: Equivalent mass or gram equivalent is mass if one equivalent which will combine with another substance in a chemical reaction the equivalent mass of a compound can be calculated by cajoling the molecular mass of compound with number of electrons gained or lost.

Complete step by step answer:
Sugar is a carbohydrate with a churl call formula $C_{12}{H}_{22}{O}_{11}$ It is also known as serosa cane or beet root.
Equivalent mass of sugar can be calculated by using the formula:-
Equivalent mass =${\displaystyle \frac{MolecularMass}{numberofelectron}}$ gained or lost.
Sucrose is a disaccharide of glucose and fructose its structure is

When sucrose undergoes a carnival reaction it gets reduced in it as loss of hydrogen’s present in it. As according to its formula$C_{12}{H}_{22}{O}_{11}$, sucrose has 22 hydrogen atoms. Therefore, it loses 22 hydro-gent atoms.
Therefore equivalent mass of sucrose is:-
Equivalent mass =${\displaystyle \frac{MolecularMass}{22}}$=${\displaystyle \frac{M}{22}}$
Note:- the actual equivalent mass of sugar is equivalent mass =${\displaystyle \frac{molecularmass}{numberofelectrons}}$gained or lost.
Molecular mass of $C_{12}{H}_{22}{O}_{11}=12(12)+22(1)+11(16)=342G$
Equivalent mass ${\displaystyle \frac{342}{22}}=15.54g$
Hence the correct option is C.


Note:
There are various types of Sugar
Fructose: found in fruits and honey.
Galactose: found in milk and dairy products.
Glucose: found in honey, fruits and vegetables.
Lactose: found in milk, made from glucose and galactose.
Maltose: found in barley.
Sucrose: made up of glucose and fructose and found in plants.
Xylose: found in wood or straw.