BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

Solutions

Chapter
Section
BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Lime (CaO) is usually added to the blast furnace in the metallurgy of iron where it reacts with impurities present in iron ore. What of the following best describes its function?

(a) CaO acts as an oxidizing agent.

(b) CaO acts as a reducing agent.

(c) CaO acts as an acid.

(d) CaO acts as a base.

Interpretation Introduction

Interpretation: The function of CaO in the metallurgy of iron where it reacts with impurities present in the iron ores has to be determined.

Concept introduction:

Pyrometallurgy is a method used for extracting and purifying metals using high temperature. It is used in the production of iron. Carbon and carbon monoxide are commonly used reducing agents in pyrometallurgy of iron to get impure iron metal. Iron ores contain impurities like silicon dioxide. Lime is added to remove theses impurities.

Explanation

Reason for correct option

Pyrometallurgy is a method used for extracting and purifying metals using high temperature. It is used in the production of iron. Carbon and carbon monoxide are commonly used reducing agents in pyrometallurgy of iron to get impure iron metal.

Iron ores contain impurities like silicon dioxide. Lime is added to remove theses impurities. Lime reacts with silicon mineral and forms calcium silicate called slag. Here, silicon dioxide is an acid whereas CaO is base oxide and hence an acid-base reaction is involved between SiO2 and CaO

The function of CaO in the metallurgy of iron is to act as a base where it reacts with impurities present in the iron ores

Hence the correct option for element which got oxidized and which got reduced in the given reaction is option d.

Reasons for incorrect options:

Write all the functions of CaO in the metallurgy of iron where it reacts with impurities present in the iron ores given in the options except option d

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

Which of the following is not one of the ways fats are useful in foods? Fats contribute to the taste and smell ...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

What are the moral implications of using alcohol during pregnancy?

Understanding Nutrition (MindTap Course List)

Why might you say that atoms are mostly empty space?

Horizons: Exploring the Universe (MindTap Course List)

Match each substance with its correct description

Human Biology (MindTap Course List)

Assign an IUPAC name to each of the following esters.

General, Organic, and Biological Chemistry