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Hydrochloric acid can dissolve solid iron according to the reaction:Fe(s) + 2 HCl(aq) ?

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

Hydrochloric acid can dissolve solid iron according to the reaction:

                       \(\mathrm{Fe}(s)+2 \mathrm{HCl}(a q) \longrightarrow \mathrm{FeCl}_{2}(a q)+\mathrm{H}_{2}(g)\)

What minimum mass of \(\mathrm{HCl}\) in grams dissolves a 2.8-g iron bar on a padlock? How much \(\mathrm{H}_{2}\) is produced by the complete reaction of the iron bar?

Step-by-Step Solution:

Step 1 of 2

The chemical reaction between hydrochloric acid and solid iron will be depicted as:

                     

The given mass of iron to be dissolved in hydrochloric acid 2.8  g.

55.85 g  of iron makes 1 mole of iron.

1g of iron will make  mole of iron.

So 2.8g of iron will make   moles of iron.

Step 2 of 2

Chapter 8, Problem 42P is Solved
Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo J Tro
ISBN: 9780321910295

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Hydrochloric acid can dissolve solid iron according to the reaction:Fe(s) + 2 HCl(aq) ?