Everything Science Grade 11

8.3 CHAPTER 8. TYPES OFREACTIONS

In this example, a chlorine atom and a hydrogenatom are exchanged to create a new product.

Cu(H 2 O)2+ 4 + 4Cl−� Cu(Cl)^24 −+ 4H 2 O

In this example, four waters and four chlorines are exchanged to create anew product.

Exercise 8 - 4

1. Refer to the diagrambelow and then answerthe questions that follow:

H

H

C C

H

H

H C

H

H

C

Cl

H

H+KOH + KCl + H 2 O

(a) Is this reaction an example of substitution, elimination or addition?

(b) Give a reason for your answer above.

2. The following diagram shows the reactants inan addition reaction.

H

H

C C

H

H

+ HCl

(a) Draw the final product in this reaction.

(b) What is the chemical formula of the product?

3. The following reaction takes place:

H

H

C C

H

H

H C

H

H

C

OH

H

H

H 2 SO 4

+ H 2 O

Is this reaction a substitution, addition or dehydration reaction? Give a reason for your answer.

4. Consider the following reaction:

Ca(OH) 2 (s) + 2NH 4 Cl(s)→ CaCl 2 (s) + 2NH 3 (g) + 2H 2 O(g)

Which one of the following best describes the type of reaction which takes place?

(a) Redox reaction

(b) Acid-base reaction

(c) Dehydration reaction

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