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Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097

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BuyFindarrow_forward

Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097
Textbook Problem

Silicon is produced for the chemical and electronics industries by the following reactions. Give the balanced equation for each reaction.

a. SiO 2 ( s )   + C ( s ) Si ( s )   +  CO ( g )

b. Silicon tetrachloride is reacted with very pure magnesium, producing silicon and magnesium chloride.

c. Na 2 SiF 6 ( s )   +  Na ( s ) Si ( s ) +  NaF ( s )

(a)

Interpretation Introduction

Interpretation: The balanced chemical equation for the production of silicon from each of the given reactions is to be stated.

Concept introduction: Silicon is a group 4A element. It is the second most abundant element in the Earth’s crust. Silicon can form four covalent bonds with non-metals.

To determine: The balanced chemical equation for the production of silicon from the reaction of silicon dioxide and carbon.

The balanced chemical equation for the stated reaction is,

SiO2(s)+2C(s)Si(s)+2CO(g)

Explanation

Explanation

The reaction between silicon dioxide (SiO2) and carbon (C) leads to the formation of silicon (Si) . The reaction that takes place is,

SiO2(s)+

b)

Interpretation Introduction

Interpretation: The balanced chemical equation for the production of silicon from each of the given reactions is to be stated.

Concept introduction: Silicon is a group 4A element. It is the second most abundant element in the Earth’s crust. Silicon can form four covalent bonds with non-metals.

To determine: The balanced chemical equation for the production of silicon from the reaction of silicon tetrachloride and pure magnesium.

The balanced chemical equation for the stated reaction is,

SiCl4(s)+2Mg(s)Si(s)+2MgCl2(s)

(c)

Interpretation Introduction

Interpretation: The balanced chemical equation for the production of silicon from each of the given reactions is to be stated.

Concept introduction: Silicon is a group 4A element. It is the second most abundant element in the Earth’s crust. Silicon can form four covalent bonds with non-metals.

To determine: The balanced chemical equation for the production of silicon from the reaction of sodium flurosilicate and sodium.

The balanced chemical equation for the stated reaction is,

Na2SiF6(s)+4Na(s)Si(s)+6NaF(s)

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