Question
A compound X contains 32 \% of A, 20 \% of B and remaining percentage of C. Then, the empirical formula of X is : (Given atomic masses of A=64 ; B=40 ; C=32 u)
NEET
Chemistry
Some Basic Concepts of Chemistry
2024
NEET 2024
NEET Chemistry Question (2024) — Solution
Options
- A. ABC _3
- B. AB _2 C _2
- C. ABC _4
- D. A _2 BC _2
Answer
A. ABC _3
Step-by-step solution
array |c|c|c|c|c| Element & array c Mass \\ percentage \% array & array c No. of \\ moles array & array c No. of moles / \\ Smallest number array & array c Simplest whole \\ number array \\ A & 32 \% & 32 64 = 1 2 & 1 2 2 & =1 \\ B & 20 \% & 20 40 = 1 2 & 1 2 2 & =1 \\ C & 48 \% & 48 32 = 3 2 & 3 2 2 & =3 \\ array So, empirical formula of X= array clll A & : & B & C \\ 1 & : & 1 & : array The correct empirical formula of compound X is ABC _3
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