Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
#19 please show work
Expert Solution
Step 1 : General Information
You have the following reaction -
Mg(s) + 2HCl(aq) => MgCl2(aq) + H2(g)
Step 2 : Solution A
Given that -
25 mL of 3 M HCl
Let's find the no of moles of HCl in this volume using formula -
Mole = Molarity * Volume (L)
Mole of HCl = 3.0 * 0.025
Mole of HCl = 0.075 mol
According to above balanced reaction, for 2 mole of HCl, one mole of Mg reacts. thus,
Here, mole of Mg reacting =
Now, Mass of Mg can be given as -
Mass of Mg = Mole * Molar mass
Mass of Mg = 0.0375 * 24.31 g
Mass of Mg = 0.9116 g
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