Normal 0 false false false EN-US X-NONE X-NONE 26.8 of Na2SO4 × xH2O gave 12.6 g of water on heating. The value of x in the compound is (M. mass of Na2SO4 = 142) (A) 14 g atoms of nitrogen (B) 0.6 moles of Sg (C) 4 g equivalents of sulphate ions (D) 1.2×1024 chloride ions.

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26.8 of Na₂SO₄ × xH₂O gave 12.6 g of water on heating. The value of x in the compound is (M. mass of Na₂SO₄ = 142)

(A) 14 g atoms of nitrogen

(B) 0.6 moles of Sg

(C) 4 g equivalents of sulphate ions

(D) 1.2×10²⁴ chloride ions.

Simran Bhatia , 12 Years ago

Grade 11

1 Answers

Shane Macguire

Wt. of anhy. Na₂SO₄ = 26.8 – 12.6 = 14.2 g

14.2 g anhy. Salt combines with water = 12.6 g

142 g anhy. Salt combines with water

\ H₂O (moles) = 126/18 = 7

Last Activity: 12 Years ago

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IIT JEE Entrance Exam> molar-mass...

26.8 of Na2SO4 × xH2O gave 12.6 g of water on heating. The value of x in the compound is (M. mass of Na2SO4 = 142) (A) 14 g atoms of nitrogen (B) 0.6 moles of Sg (C) 4 g equivalents of sulphate ions (D) 1.2×1024 chloride ions.

Simran Bhatia , 12 Years ago

Shane Macguire

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26.8 of Na₂SO₄ × xH₂O gave 12.6 g of water on heating. The value of x in the compound is (M. mass of Na₂SO₄ = 142)

(A) 14 g atoms of nitrogen

(B) 0.6 moles of Sg

(C) 4 g equivalents of sulphate ions

(D) 1.2×10²⁴ chloride ions.