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Hydrochloric acid can dissolve solid iron according to the

Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro ISBN: 9780321910295 34

Solution for problem 42P Chapter 8

Introductory Chemistry | 5th Edition

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Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro

Introductory Chemistry | 5th Edition

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Problem 42P

PROBLEM 42P

Hydrochloric acid can dissolve solid iron according to the reaction:

Fe(s) + 2 HCl(aq) → FeCl2(aq) + H2(g)

What minimum mass of HCl in grams dissolves a 2.8-g iron bar on a padlock? How much H2 is produced by the complete reaction of the iron bar?

Step-by-Step Solution:
Step 1 of 3

Solution 42P

Let us see, one mole (55.8 g) of Fe reacts with 2 moles (36.5*2 = 73 g) of HCL

so 2.2 g will react with 2.2*73/55.8...

Step 2 of 3

Chapter 8, Problem 42P is Solved
Step 3 of 3

Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo J Tro
ISBN: 9780321910295

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