From Engineering Chemistry

DISCUSSION

1.

Name the ores of iron.

2.

What is Mohr's salt?

3.

Name the external indicator used in determination of ferrous content.

4.

What is IUPAC name of K 3[Fe(CN) 6]?

5.

What will happen if K 3[Fe(CN) 6] is used as an internal indicator in this titration?

6.

Write the chemical reactions involved in this reaction.

7.

Why is K 2Cr 2O 7 used as an oxidizing agent only in the presence of acid?

8.

Why is H 2SO 4 added for preparing a standard solution of Mohr's salt?

9.

Why does K 2Cr 2O 7 not act as a self-indicator?

10.

Name one external and one internal indicator used in K 2Cr 2O 7 titration.

11.

Which is a more powerful oxidizing agent, KMnO 4 or K 2Cr 2O 7?

12.

What is the equivalent weight of K 2Cr 2O 7?

13.

Which substance can be used as a self-indicator?

14.

Name one adsorption indicator.

15.

Give the equivalent weight of an oxidizing agent.

16.

What is the oxidation state of Cr in K 2Cr 2O 7?

17.

Why should the K 3[Fe(CN) 6] indicator be freshly prepared?

18.

Give the formula of Mohr's salt.

19.

What is the deep blue colored compound formed in the experiment?

Answers

1.

Haematite (Fe 2O

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Inorganic Chemicals and Compounds
Inorganic chemicals, inorganic salts and inorganic compounds are substances of mineral origin that do not contain carbon in their molecular structure.
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Oxygen reduction potential (ORP) electrodes are analytical sensors for measuring oxidation-reduction potential (ORP).
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Heat treatment salt is melted to form a molten salt bath, which is used to anneal, solution treat, quench or harden, temper, clean, strip, descale, braze, sodler, nitride, carbonitride, carbuize, and cure rubber.
Industrial Gases
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