Calculate the difference in the formulae and molecular masses for :

(a) $C H_{3} O H$ and $C_{2} H_{5} O H$

(b) $C_{2} H_{5} O H$ and $C_{3} H_{7} O H$

(c) $C_{3} H_{7} O H$ and $C_{4} H_{9} O H$

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Solution

a) $C H_{3} O H$ and $C_{2} H_{5} O H$

The difference in the molecular formula is of unit -CH₂

Difference in molecular mass is 12 + (2 x 1) = 14 units

(b) $C_{2} H_{5} O H$ and $C_{3} H_{7} O H$

The difference in the molecular formula is of -CH₂

Difference in molecular mass is 12 + (2 x 1) = 14 units

(c) $C_{3} H_{7} O H$ and $C_{4} H_{9} O H$

The difference in molecular formula is of - CH₂

Difference in molecular mass is 12 + (2 x 1) = 14 units

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Similar questions

The difference in the formula and molecular masses of CH₃OH and C₂H₅OH is:

An organic compound 'A' reacts with Sodium metal and forms 'B'. On heating with conc.H₂SO₄, A gives diethyl ether. A and B respectively.

C₃H₇OH- This is the molecular formula for :

C_{4} H_{9} O H

C_{5} H_{11} O H

C_{5} H_{11} O H

C_{7} H_{15} O H

C_{3} H_{7} O H

C_{6} H_{13} O H

%

C_{2} H_{5} O H

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