1. Consider the following reaction: Mg(s) + 2HCI(aq) → MgCl(aq) + H2(g) A piece of magnesium was dropped into 0.1 M HCl and the following data was obtained: Mass of magnesium (g) Time (s) Mass of magnesium consumed (g) 0.30 0.15 0.10 12 0.063 16 0.043 20 0.027 (a) Calculate the average rate of mass of Mg consumed per second for the first twenty second. (b) Calculate the average rate of reaction in moles of Mg consumed per second for the first eight second. (Relative atomic mass of Mg = 24.3) (c) What would happen to the concentration of H* as the reaction proceeds?
1. Consider the following reaction: Mg(s) + 2HCI(aq) → MgCl(aq) + H2(g) A piece of magnesium was dropped into 0.1 M HCl and the following data was obtained: Mass of magnesium (g) Time (s) Mass of magnesium consumed (g) 0.30 0.15 0.10 12 0.063 16 0.043 20 0.027 (a) Calculate the average rate of mass of Mg consumed per second for the first twenty second. (b) Calculate the average rate of reaction in moles of Mg consumed per second for the first eight second. (Relative atomic mass of Mg = 24.3) (c) What would happen to the concentration of H* as the reaction proceeds?
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter14: Chemical Kinetics: The Rates Of Chemical Reactions
Section: Chapter Questions
Problem 12PS: The reaction 2 NO(g) + 2 H2(g) N2(g) + 2 H2O(g) was studied at 904 C, and the data in the table...
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Consider the following reaction:
Mg(s) + 2HCI(aq) → MgCl½(aq) + H2(g)
A piece of magnesium was dropped into 0.1 M HCl and the following data was obtained:
Mass of magnesium (g)
Time (s)
Mass of magnesium consumed (g)
0.30
4
0.15
8
0.10
12
0.063
16
0.043
20
0.027
(a) Calculate the average rate of mass of Mg consumed per second for the first twenty second.
(b) Calculate the average rate of reaction in moles of Mg consumed per second for the first eight second.
(Relative atomic mass of Mg = 24.3)
(c) What would happen to the concentration of H' as the reaction proceeds?
(d) What would happen to the concentration of CI as the reaction proceeds?
(e) Plot a graph showing the mass of Mg against time.
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