Question
Calculate the amount of aluminium present in Al _2( SO _4)_3 if the compound contains 4 g of sulfur. [Molar mass of sulfur = 32 g/mol , Molar mass of Al =27 g/mol ]
MHT CET
Chemistry
Some Basic Concepts of Chemistry
2026
MHT CET 2026 (16 April Shift 1)
MHT CET Chemistry Question (2026) — Solution
Options
- A. 2.25 g
- B. 2.50 g
- C. 2.0 g
- D. 2.75 g
Answer
A. 2.25 g
Step-by-step solution
In one mole of Al _2( SO _4)_3, there are 2 moles of Al and 3 moles of S. Mass of Al in 1 mole of compound = 2 27 = 54 g Mass of S in 1 mole of compound = 3 32 = 96 g The ratio of the mass of Al to the mass of S in the compound is 54 96 = 9 16 . Given the mass of S is 4 g, the mass of Al is calculated as: Mass of Al = 4 9 16 = 9 4 = 2.25 g Answer: 2.25 g
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