BOOK_CONTENT
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

Copyright Laxmi Publications Pvt. Ltd. 2007 under license agreement with Books24x7

Products & Services
Oxidation Reduction Potential (ORP) Electrodes
Oxygen reduction potential (ORP) electrodes are analytical sensors for measuring oxidation-reduction potential (ORP).
Heat Treatment Salts
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.
Level Switches
Level switches is a generic search term for devices that are used to detect liquid or powder levels, or interfaces between liquids. These level measurements are indicated via an electrical switching action.
Domain Registration Services
Domain registration services register URLs as well as transferring and auctioning registered domains.

Topics of Interest

DISCUSSION 1. Define the term pH. 2. What is the effect of temperature on pH? 3. What is the possible pH of pure water at 65 C? 4. What is the effect of dilution on pH of an acidic solution? 5.

Titration and Substances used Chemical Formula Equivalent Weight Acid-Alkali Titration Sodium carbonate (Washing Soda) Na 2CO 3 M.W./2 = 53.06 Sodium bicarbonate (Baking soda) NaHCO 3 M.W./1 =...

16.3 PREPARATION OF SOLUTIONS 16.3.1 Preparation of Indicator Solutions Preparation of some indicator solutions are described below: 0.1% Methyl orange solution: Dissolve 1 g of the substance in 1000...

Substance Molecular Weight Equivalent Weight Amount in gms per liter for Solutions of Strength N/10 N/20 N/40 Ammonium thiocyanate [NH 4CNS] 76.10 76.10 7.61 3.805 1.9025 Copper sulphate [CuSO...

DISCUSSION 1. Define equivalent weight. 2. What is the equivalent weight of copper? 3. What is chemical displacement? 4. Why does iron displace copper in the experiment? 5. How can you prepare...