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How can you use the activity series to determine whether a

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

Solution for problem 21Q Chapter 16

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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5
Problem 21Q

How can you use the activity series to determine whether a metal will dissolve in acids such as HCl or HBr?

Step-by-Step Solution:

Answer :

Step 1</p>

The activity series has long been used to predict the direction of oxidation-reduction reactions.

The activity series of metals is an empirical tool used to predict products in displacement reactions and reactivity of metals with water and acids in replacement reactions and ore extraction. It can be used to predict the products in similar reactions involving a different metal.

The Activity Series of the metals is an invaluable aid to predicting the products of replacement reactions. It also can be used as an aid in predicting products of some other reactions. Pay attention to the notes below as they are provided to help you make better use of the activity series than just the list of metals by themselves.

Each element on the list replaces from a compound any of the elements below it. The larger the interval between elements, the more vigorous the reaction.

The first five elements (lithium - sodium) are known as very active metals and they react with cold water to produce the hydroxide and hydrogen gas.

The next four metals (magnesium - chromium) are considered active metals and they will react with very hot water or steam to form the oxide and hydrogen gas.

The oxides of all of these first metals resist reduction by H2.

The next six metals (iron - lead) replace hydrogen from HCl and dil. sulfuric and nitric acids. Their oxides undergo reduction by heating with H2, carbon, and carbon monoxide.

The metals lithium - copper, can combine directly with oxygen to form the oxide.

The last five metals (mercury - gold) are often found free in nature, their oxides decompose with mild heating, and they form oxides only indirectly.

--------------------------------------...

lithium, potassium, strontium, calcium, sodium

magnesium, aluminum, zinc, chromium

iron, cadmium, cobalt, nickel, tin, lead

HYDROGEN

antimony, arsenic, bismuth, copper

mercury, silver, palladium, platinum, gold

Step 2ACTIVITY SERIES OF METALS

Metal

Symbol

Reactivity

Lithium

Li

displaces H2 gas from water, steam and acids and forms hydroxides

Potassium

K

Strontium

Sr

Calcium

Ca

Sodium

Na

Magnesium

Mg

displaces H2 gas from steam and acids and forms hydroxides

Aluminum

Al

Zinc

Zn

Chromium

Cr

Iron

Fe

displaces H2 gas from acids only and forms hydroxides

Cadmium

Cd

Cobalt

Co

Nickel

Ni

Tin

Sn

Lead

Pb

Hydrogen gas

H2

included for comparison

Antimony

Sb

combines with O2 to form oxides and cannot displace H2

Arsenic

As

Bismuth

Bi

Copper

Cu

Mercury

Step 2 of 2

Chapter 16, Problem 21Q is Solved
Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo J Tro
ISBN: 9780321910295

The answer to “How can you use the activity series to determine whether a metal will dissolve in acids such as HCl or HBr?” is broken down into a number of easy to follow steps, and 21 words. The full step-by-step solution to problem: 21Q from chapter: 16 was answered by , our top Chemistry solution expert on 05/06/17, 06:45PM. This textbook survival guide was created for the textbook: Introductory Chemistry, edition: 5. Introductory Chemistry was written by and is associated to the ISBN: 9780321910295. This full solution covers the following key subjects: acids, activity, determine, dissolve, hbr. This expansive textbook survival guide covers 19 chapters, and 2045 solutions. Since the solution to 21Q from 16 chapter was answered, more than 334 students have viewed the full step-by-step answer.

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