Chapter 2: Q4.71P (page 40)

Give the oxidation number of chromium in the following:
$(a) C r O_{3} (b) C r_{2} O_{7}^{2 -} (c) C r_{2} {(S O_{4})}_{3}$

Short Answer

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You need to provide the oxidation number of chromium for the given compounds.

Step by step solution

Oxidation state of chromium in CrO3

Oxidation state of Oxygen is -2.

Let, oxidation state of chromium in CrO₃is x.

No you can write,

$x + 3 (- 2) = 0 x = + 6$

Hence, oxidation state of chromium in CrO₃is +6.

Oxidation state of chromium in Cr2O72-

Oxidation state of Oxygen is -2.

Let, oxidation state of chromium in Cr₂O₇^2-is y.

No you can write,

$2 y + 7 (- 2) = - 2 2 y = + 12 y = + 6$

Hence, oxidation state of chromium in Cr₂O₇^2-is +6.

Oxidation state of chromium in Cr2(SO4)3

Oxidation state of SO₄ is -2.

Let, oxidation state of chromium in Cr₂(SO₄)₃is z.

No you can write,

$2 z + 3 (- 2) = 0 2 z = + 6 z = + 3$ $2 z + 3 (- 2) = 0 2 z = + 6 z = + 3$

Hence, oxidation state of chromium in Cr₂(SO₄)₃is +3.

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Give the oxidation number of chromium in the following:
$(a) C r O_{3} (b) C r_{2} O_{7}^{2 -} (c) C r_{2} {(S O_{4})}_{3}$

Short Answer

Step by step solution

Oxidation state of chromium in CrO3

Oxidation state of chromium in Cr2O72-

Oxidation state of chromium in Cr2(SO4)3

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Give the oxidation number of chromium in the following:aCrO3bCr2O72-cCr2SO43

Short Answer

Step by step solution

Oxidation state of chromium in CrO3

Oxidation state of chromium in Cr2O72-

Oxidation state of chromium in Cr2(SO4)3

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Chemical Analysis

Physical Chemistry

Inorganic Chemistry

Making Measurements

Nuclear Chemistry

Chemistry Branches

Study anywhere. Anytime. Across all devices.

Give the oxidation number of chromium in the following:
$(a) C r O_{3} (b) C r_{2} O_{7}^{2 -} (c) C r_{2} {(S O_{4})}_{3}$