A compound possesses 8% sulphur by mass. The least molecular mass is
  • a)
    200
  • b)
    400
  • c)
    155
  • d)
    355
Correct answer is option 'B'. Can you explain this answer?

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Answers

Guest Guy
Apr 30, 2019
Molecular mass(let m)will be least when there's only one sulphur atom in a molecule .
m×8/100=32
m=400

Rohan Deshmukh
Aug 09, 2021
The molar mass(one mole) of Sulphur is 32 gmol^-1
The per cent of sulphur in the compound is 8%
Therefore,in 100g of compound,8g Sulphur is present.
Now the mininmum molecular mass of the compound will be:

(100×32)÷8 = 400 g

Hope it helped :)

Molecular mass(let m)will be least when there's only one sulphur atom in a molecule .m×8/100=32m=400
Molecular mass(let m)will be least when there's only one sulphur atom in a molecule .m×8/100=32m=400