Arrange Cu, Ag, and Zn in order of their activities, listing the most active fir

Question

Arrange Cu, Ag, and Zn in order of their activities, listing the most active first. Arrange Mg, H, and Ag in order of their activities, listing the most active first. Arrange all five of the metals (excluding hydrogen) in an activity series, listing the most active first. On the basis of the reactions observed in the six test tubes, explain why the position of hydrogen cannot be fixed exactly with respect to all of the other elements listed in the activity series in Question 5. What additional test(s) would be needed to establish the exact position of hydrogen in the activity series of the elements listed in Question 5? Answer the question in full sentences. On the basis of the evidence developed in this experiment: (a) Would silver react with dilute sulfuric acid? Why or why not? (b) Would magnesium react with dilute sulfuric acid? Why or why not?

Explanation / Answer

3. Arrangement of metals on the basic of activity,

(1) Zn

(2) Cu

(3) Ag

4. Arrangement of metals on the basic of activity,

(1) Mg

(2) H

(3) Ag

5. Arrangement of metals on the basic of activity,

(1) Mg

(2) Zn

(3) H

(4) Cu

(5) Ag

6. Hydrogen does not have the same activity with all the metals but rather it has different activity with different types of metals acording to its tendency of how esily it can get oxidized or reduced in the process. Thus hydrogen position cannot be fixed easily.

7. The experiment to be performed here would be the reaction of metals with hydrochloric acid (HCl). In the reaction H2 gas is formed which is measured and the ability of metals to react and form hydrogen gas tells us the ease with which the metals might get oxidized or is active compared to hydrogen.

8. Based on the experiment.

(a) Ag would not react with dil H2SO4 acid as it is above hydrogen in the activity series, such that it does not get oxidized by Ag metal.

(b) Mg would react with dil H2SO4 acid to form hydrogen,, such that it is more active than the Mg metal.

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