Fe₂(SO₄)₃ is the empirical formula of a crystalline compound of iron. It is used in water and sewage treatment for the removal of suspended impurities. Calculate the mass percentage of iron, sulphur and oxygen in the compound.

Solution

Molecular mass of $Fe subscript 2 left parenthesis SO subscript 4 right parenthesis subscript 3$
$equals space 2 cross times 56 plus 3 left parenthesis 32 plus 4 cross times 16 right parenthesis equals space 112 plus 288 equals space 400 space straight a. straight m. straight u.$
Percentage of iron
$equals space fraction numerator Mass space of space iron over denominator Molecular space mass space of space Fe subscript 2 left parenthesis SO subscript 4 right parenthesis subscript 3 end fraction cross times 100 equals space 112 over 400 cross times 100 space equals space 28 percent sign$
Percentage of sulphur
$space equals space fraction numerator Mass space of space sulphur over denominator Molecular space mass space of space Fe subscript 2 left parenthesis SO subscript 4 right parenthesis subscript 3 end fraction cross times 100 space equals space 96 over 400 cross times 100 space equals space 24 percent sign$
Percentage of oxygen
$equals space fraction numerator Mass space of space oxygen over denominator Molecular space mass space of space Fe subscript 2 left parenthesis SO subscript 4 right parenthesis subscript 3 end fraction cross times space 100 equals space 192 over 400 cross times 100 equals space space 48 percent sign$

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Some Basic Concepts Of Chemistry

Fe₂(SO₄)₃ is the empirical formula of a crystalline compound of iron. It is used in water and sewage treatment for the removal of suspended impurities. Calculate the mass percentage of iron, sulphur and oxygen in the compound.

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Some Basic Concepts Of Chemistry

Fe2(SO4)3 is the empirical formula of a crystalline compound of iron. It is used in water and sewage treatment for the removal of suspended impurities. Calculate the mass percentage of iron, sulphur and oxygen in the compound.

Some More Questions From Some Basic Concepts of Chemistry Chapter

What does SI units stand for?

What is the relation between temperature in Kelvin (K) and temperature on centigrade scale?

The popular unit of pressure is atmosphere, how is it related to pascal?

What are SI units of the following:(i) Density (ii) Molarity (iii) Energy (iv) Temperature ?

Out of 5.00 g and 5.0 g which one is more accurate and why?

What is iodised table salt?

Under what conditions air is considered as a heterogenous mixture?

What is gun powder?

Name two elements which are liquids.

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Fe₂(SO₄)₃ is the empirical formula of a crystalline compound of iron. It is used in water and sewage treatment for the removal of suspended impurities. Calculate the mass percentage of iron, sulphur and oxygen in the compound.

What are SI units of the following:

(i) Density
(ii) Molarity
(iii) Energy
(iv) Temperature ?