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JEE Main 202227 JuneMorning Shift

Exam: JEE Main
Year: 2022
Date: 27 June
Shift: Morning Shift
Subject: Chemistry
Chapter: Solid State

JEE Main 2022 · 27 June · Morning Shift · Chemistry · Solid State

Two elements A and B which form 0 . 15 moles of A _ 2 B and AB _ 3...

Two elements

A

and

B

which form

0 . 15

moles of

{A}_{2}B

and

{AB}_{3}

type compounds. If both

{A}_{2}B

and

{AB}_{3}

weigh equally, then the atomic weight of

A

is____times of atomic weight of

B

.

Correct answer

0

Step-by-step solution

Given: Molar mass of ${A}_{2}B = {AB}_{3}$

$∴ \left(2A + B\right) = \left(A + 3B\right)\left[$ $\begin{array}{ll}A \to Atomicwt . of A \\ B \to Atomicwt . of B\end{array}$ $\right]$

$⇒ A = 2B$

$∴$ atomic wt. of $A$ is 2 times of atomic wt. of $B$ Integer answer is $2$ .

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