FOUNDATIONS OF COLLEGE CHEM +KNEWTONALTA
FOUNDATIONS OF COLLEGE CHEM +KNEWTONALTA
15th Edition
ISBN: 9781119797807
Author: Hein
Publisher: WILEY
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Chapter 9, Problem 21PE

(a)

Interpretation Introduction

Interpretation:

A diagram with eight atoms of potassium reacting with five chlorine atoms to give potassium chloride has to be given and also the limiting agent has to be given.

Concept Introduction:

The limiting reactant of the reaction is the reactant that is completely used during the reaction.  Using the mole ratio and starting amounts of the reactants limiting reactant can be determined.

Example:

Consider a reaction starts with 30g CaCO3&11gHCl.  The values in grams has to be converted to moles by dividing with their molecular weights.  According to the mole ratio 0.3g of calcium carbonate require 0.6g of HCl completely.  Therefore HCl is the limiting agent.

(b)

Interpretation Introduction

Interpretation:

A diagram with ten atoms of aluminium react with three oxygen molecules to give aluminium oxide has to be given and also the limiting agent has to be given.

Concept Introduction:

Refer to part (a).

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