Home Chemistry Some Basic Concepts of Chemistry The Mole Concept The simplest formula of a compound containin…
Chemistry Some Basic Concepts of Chemistry The Mole Concept Single Correct MCQ
Published on: August 14, 2026

The simplest formula of a compound containing 50% of element ‘A’ (Atomic weight = 10) and 50% of element ‘B’ (Atomic weight = 20) is

A
AB
B
A 2 B
C
A 2 B 2
D
A 2 B 3

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Text Solution

Verified by Experts
The correct answer is:
B

To determine the simplest formula of a compound containing of element ' ' (atomic

weight 10) and of element ' ' (atomic weight ), let's go through the steps systematically:

Step 1: Assume 100 grams of the compound
In 100 grams of the compound:

Mass of element grams

Mass of element grams

Step 2: Calculate the number of moles of each element

Moles of A:

Moles of B:

Step 3: Determine the simplest whole number ratio of moles

Divide the number of moles of each element by the smallest number of moles:

Step 4: Write the simplest formula based on this ratio
The simplest formula of the compound, based on the ratio , is .

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