×
Log in to StudySoup
Get Full Access to Introductory Chemistry - 5 Edition - Chapter 16 - Problem 106p
Join StudySoup for FREE
Get Full Access to Introductory Chemistry - 5 Edition - Chapter 16 - Problem 106p

Already have an account? Login here
×
Reset your password

Solved: Determine whether HCl can dissolve each metal sample. If it can, write a

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

Solution for problem 106P Chapter 16

Introductory Chemistry | 5th Edition

  • Textbook Solutions
  • 2901 Step-by-step solutions solved by professors and subject experts
  • Get 24/7 help from StudySoup virtual teaching assistants
Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro

Introductory Chemistry | 5th Edition

4 5 1 361 Reviews
23
1
Problem 106P

Problem 106P

Determine whether HCl can dissolve each metal sample. If it can, write a balanced chemical reaction showing how the metal dissolves in HCl and determine the minimum amount of 6.0 M HCl required to completely dissolve the sample.

(a) 5.90 g Ag

(b) 2.55 g Pb

(c) 4.83 g Sn

(d) 1.25 g Mg

Step-by-Step Solution:
Step 1 of 3

Solution 106P:

Here, we are going to determine whether HCl can dissolve the given metal samples and write a balanced chemical equation for the ones which can be dissolved.

Step1:

To determine whether HCl can dissolve the given metals, we have to check the position of the metals in the activity series. The activity series is a list of metals arranged in the order of their decreasing activities.

                

Step2:

As we have seen. Out of all the metals given in the problem, only silver(Ag) is placed below hydrogen in the activity series. Thus, only Ag will not be dissolved in HCl. Lead(Pb), Tin(Sn) and Magnesium(Mg) will be dissolved in HCl.  The balanced equations involved in the process are:

                        Pb(s) + 2HCl(aq) → PbCl2(aq) + H2(g)

Sn(s) + 2HCl(aq) → SnCl2(aq) + H2(g)

                        Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)

Step3:

Determination of amount of HCl required to dissolve 2.55 g Pb:

Given,

Mass of Pb used = 2.55 g

Molar mass of Pb = 207.2 g/mol

Therefore, number of moles of Pb = given mass / molar mass

                                       = 2.55 g / (207.2 g/mol)

                                       = 0.0123 mol

Step4:

From the above balanced equation, it is clear that,

To dissolve 1 mol of Pb, number of moles of HCl required = 2 mol

Therefore, to dissolve 0.0123 mol of Pb, number of moles of HCl required = 2 x 0.0123

                                                                                       = 0.0246 mol

Step5:

Molarity of HCl = 6.0 M

Volume of HCl required = number of moles of HI / molarity

                        = 0.0246 mol / 6.0 M

                        = 0.0041 L

                        = 0.0041 x 1000 mL        [1 L = 1000 mL]

                        = 4.1 mL

Thus, 4.1 mL of 6.0 M HCl is required to completely dissolve the Pb sample.

Step6:

Determination of amount of HCl required to dissolve 4.83 g Sn:

Given,

Mass of Sn used = 4.83 g

Molar mass of Sn = 118.71 g/mol

Therefore, number of moles of Sn = given mass / molar mass

                                       = 4.83 g / (118.71 g/mol)

                                       = 0.041 mol

Step7:

From the above balanced equation, it is clear that,

To dissolve 1 mol of Sn, number of moles of HCl required = 2 mol

Therefore, to dissolve 0.041 mol of Sn, number of moles of HCl required = 2 x 0.041

                                                                                       = 0.082 mol

Step8:

Molarity of HCl = 6.0 M

Volume of HCl required = number of moles of HI / molarity

                        = 0.082 mol / 6.0 M

                        = 0.0137 L

                        = 0.0137 x 1000 mL        [1 L = 1000 mL]

                        = 13.7 mL

Thus, 13.7 mL of 6.0 M HCl is required to completely dissolve the Sn sample.

Step9:

Determination of amount of HCl required to dissolve 1.25 g Mg:

Given,

Mass of Mg used = 1.25 g

Molar mass of Mg = 24.305 g/mol

Therefore, number of moles of Mg = given mass / molar mass

                                       = 1.25 g / (24.305 g/mol)

                                       = 0.051 mol

Step10:

From the above balanced equation, it is clear that,

To dissolve 1 mol of Mg, number of moles of HCl required = 2 mol

Therefore, to dissolve 0.051 mol of Mg, number of moles of HCl required = 2 x 0.051

                                                                                       = 0.102 mol

Step11:

Molarity of HCl = 6.0 M

Volume of HCl required = number of moles of HI / molarity

                        = 0.102 mol / 6.0 M

                        = 0.017 L

                        = 0.017 x 1000 mL        [1 L = 1000 mL]

                        = 17 mL

Thus, 17 mL of 6.0 M HCl is required to completely dissolve the Mg sample.

                                        ----------------------------

Step 2 of 3

Chapter 16, Problem 106P is Solved
Step 3 of 3

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

This full solution covers the following key subjects: HCL, metal, sample, dissolve, determine. This expansive textbook survival guide covers 19 chapters, and 2046 solutions. Introductory Chemistry was written by and is associated to the ISBN: 9780321910295. The answer to “Determine whether HCl can dissolve each metal sample. If it can, write a balanced chemical reaction showing how the metal dissolves in HCl and determine the minimum amount of 6.0 M HCl required to completely dissolve the sample.(a) 5.90 g Ag(b) 2.55 g Pb(c) 4.83 g Sn(d) 1.25 g Mg” is broken down into a number of easy to follow steps, and 50 words. This textbook survival guide was created for the textbook: Introductory Chemistry, edition: 5. Since the solution to 106P from 16 chapter was answered, more than 367 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 106P from chapter: 16 was answered by , our top Chemistry solution expert on 05/06/17, 06:45PM.

Other solutions

People also purchased

Related chapters

Unlock Textbook Solution

Enter your email below to unlock your verified solution to:

Solved: Determine whether HCl can dissolve each metal sample. If it can, write a