Chapter 9.2, Problem 31SSC

Interpretation Introduction

Interpretation:

The difference between single replacement and double replacement reaction needs to be explained.

Concept introduction:

Chemical reaction is the process in which rearrangement of atoms of one or more substances occur to produce different substances. There are many evidences of a chemical reaction, such as, change of temperature, colour change, formation of gas and solid etc.

Answer to Problem 31SSC

There are two types of displacement reaction, single replacement and double replacement reaction.

Explanation of Solution

There are two types of replacement reaction, single replacement and double replacement reaction. In single replacement reaction, one highly reactive metal replaces the less reactive metals from a compound and in a double displacement reaction, the exchange of ions of two compounds occurs and new compounds are formed.

The difference between single displacement and double displacement reaction are,

single displacement reaction	double displacement reaction
1)Activity series of metals is followed	1)Activity series of metals is not followed
2)Reactants of this type reaction are a metal or a non-metal and a compound.	2)Reactants of this type reaction are two compounds.
3)The products of this type reaction are a new compound, the replaced metal and the non-metal.	3)The products of this type of reaction are two different compounds, one of which is a solid, water or a gas.
4)Exchange of ions does not take place.	4)Exchange of ions takes place.