   # What mass of HCI, in grams, is required to react with 0.750 g of Al(OH) 3 ? What mass of water, in grams, is produced? Al(OH) 3 (s) + 3 HCI(aq) → AlCl 3 (aq) + 3 H 2 O(l) ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

#### Solutions

Chapter
Section ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 4, Problem 2PS
Textbook Problem
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## What mass of HCI, in grams, is required to react with 0.750 g of Al(OH)3? What mass of water, in grams, is produced?Al(OH)3(s) + 3 HCI(aq) → AlCl3(aq) + 3 H2O(l)

Interpretation Introduction

Interpretation:

The mass of HCl, required to react with 0.750gofAl(OH)3 and mass of water produced in the reaction should be determined.

Concept introduction:

Numberofmole=GivenmassofthesubstanceMolarmass

• The molar mass of an element or compound is the mass in grams of 1 mole of that substance, and it is expressed in the unit of grams per mol (g/mol).
• For chemical reaction balanced chemical reaction equation written in accordance with the Law of conservation of mass.
• Law of conservation of mass states that for a reaction total mass of the reactant and product must be equal.
• Stoichiometric factor is a relationship between reactant and product which is obtained from the balanced chemical equation for a particular reaction.

### Explanation of Solution

Balanced chemical equation for the given reaction is,

Al(OH)3(s)+HCl(aq)AlCl3(aq)+3H2O(l)

The amount (moles) of Al(OH)3 available can be calculated by using the equation.

Numberofmole=GivenmassofthesubstanceMolarmass

0.750gAl(OH)3×1molAl(OH)345gAl(OH)3=0.01666molAl(OH)3

Using the stoichiometric factor calculating the amount of HCl required based on the amount of Al(OH)3 as follows,

0.01666molAl(OH)3×3molHCl1molAl(OH)3=0

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