A sample of an unknown metal was reacted with 10.0 mL of HCl to produce hydrogen gas, which was collected over water. Using data in Option, answer the following questions. Assume that there was no air initially present in the container used to collect the hydrogen gas.. 1. Using M to represent the metal, write a balanced equation for the reaction of the metal with HCI. Assume that the metal commonly forms a cation having a +2 charge. M + 2HCl -> mcl₂ + H₂ 2. Determine the pressure of the hydrogen gas collected in the experiment.

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Chapter20: The Representative Elements
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Solve the problems using the information from option B.
IDENTIFICATION OF AN UNKNOWN METAL BY REACTION WITH
HYDROCHLORIC ACID
A sample of an unknown metal was reacted with 10.0 mL of HCl to produce hydrogen gas,
which was collected over water. Using data in Option, answer the following questions.
Assume that there was no air initially present in the container used to collect the hydrogen gas.
1. Using M to represent the metal, write a balanced equation for the reaction of the metal with
HCl. Assume that the metal commonly forms a cation having a +2 charge.
M + 2HCl -> mcl₂ + H₂
2. Determine the pressure of the hydrogen gas collected in the experiment.
3. Determine the moles of hydrogen gas collected.
4. Determine the moles of metal used.
6. Write a balanced equation for the reaction of the metal with HCI.
Yovies II.
ال 100
0.969
20.960
5. Determine the atomic weight of the metal, and then use the periodic table to identify the U
metal.
sababo in fait un
Transcribed Image Text:IDENTIFICATION OF AN UNKNOWN METAL BY REACTION WITH HYDROCHLORIC ACID A sample of an unknown metal was reacted with 10.0 mL of HCl to produce hydrogen gas, which was collected over water. Using data in Option, answer the following questions. Assume that there was no air initially present in the container used to collect the hydrogen gas. 1. Using M to represent the metal, write a balanced equation for the reaction of the metal with HCl. Assume that the metal commonly forms a cation having a +2 charge. M + 2HCl -> mcl₂ + H₂ 2. Determine the pressure of the hydrogen gas collected in the experiment. 3. Determine the moles of hydrogen gas collected. 4. Determine the moles of metal used. 6. Write a balanced equation for the reaction of the metal with HCI. Yovies II. ال 100 0.969 20.960 5. Determine the atomic weight of the metal, and then use the periodic table to identify the U metal. sababo in fait un
1.
A.
B.
C.
D.
E.
F.
G.
H.
T(°C)
30
20
20
30
20
20
30
30
P(torr)
765
753
745
762
748
767
757
752
M HCI
5.0
4.0
3.0
3.0
2.0
4.0
5.0
2.0
Mass of metal (g)
0.207
0.204
0.283
0.197
0.235
0.146
0.318
0.159
V gas (mL)
60.9
92.4
59.9
86.9
67.2
88.8
74.0
71.2
Transcribed Image Text:1. A. B. C. D. E. F. G. H. T(°C) 30 20 20 30 20 20 30 30 P(torr) 765 753 745 762 748 767 757 752 M HCI 5.0 4.0 3.0 3.0 2.0 4.0 5.0 2.0 Mass of metal (g) 0.207 0.204 0.283 0.197 0.235 0.146 0.318 0.159 V gas (mL) 60.9 92.4 59.9 86.9 67.2 88.8 74.0 71.2
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