Chemistry - Mole Concept Question with Solution | TestHub

ChemistryMole ConceptMiscellaneous/MixedEasy2 minPYQ_2020

ChemistryEasynumerical

An organic compound (P) having molecular mass 180 is acylated with $C H_{3} C O C l$ to get a new compound with molecular mass 348. The number of amino groups present per molecule of compound (P) is

Answer:

4.00

Solution:

$R - \underset{M}{{NH}_{2}} + {CH}_{3} COCl \to \underset{M + 42}{{RNHCOCH}_{3}} + HCl$
If the increase in molecular mass is 42, the reactant has one $N H_{2}$ group.
Actual increase in molecular mass $= 348 - 180 = 168$
Number of $N H_{2}$ groups $= \frac{168}{42} = 4$

Stream:NTA_ABHYASSubject:ChemistryTopic:Mole ConceptSubtopic:Miscellaneous/Mixed

⏱ 2mℹ️ Source: PYQ_2020

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