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Aluminium sulphate contains 3.2 beams sulphur. The weight of Al present in the sample is

Aluminium sulphate contains 3.2 beams sulphur. The weight of Al present in the sample is

Grade:10

1 Answers

Rituraj Tiwari
askIITians Faculty 1792 Points
3 years ago
3 x 32 grams of Sulphur is present in 1 mole of Al₂(SO₄)₃

So, 3.2 grams of Sulphur is present in ¹/₃₀ moles of Al₂(SO₄)₃

We, know each mole of Al₂(SO₄)₃ contains 2 moles of Al

So ¹/₃₀ moles of Al₂(SO₄)₃ contains ¹/₁₅ moles of Al
Mass of ¹/₁₅ moles of Al = 27 x ¹/₁₅ =1.8 grams
Therefore, mass of Al in the sample is 1.8 grams

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