Below is a set of data collected
at 0.95 atm
for the formation of CO
2
gas produced when calcium
carbonate is reacted with aqueous HCl:
Time (min)
Volume CO
2
(mL)
1
0.2
0
2
0.3
0
3
0.5
0
4
0.7
0
5
0.9
0
6
1
.00
7
1.2
0
8
1.3
0
9
1.5
0
10
1.7
0
11
1.9
0
12
2
.00
13
2.2
0
14
2.4
0
15
2.5
0
16
2.7
0
17
2.9
0
18
3
.00
19
3.2
0
20
3.4
0
Your assignment is as follows:
1. Create a spreadsheet in Excel (or equivalent) that
contains this data and does the following
calculations
automatically:
a. Converts each gas volume measurement to
moles of CO
2
produced
(Use a
PV = nRT to
solve
). Do this twice: one column for 0
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first part is Ca3(PO4)2
When the second cation just starts to precipitate, what percentage of the first cation remains in solution?
______ %
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Express your answer numerically.
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Ca5(PO4)3F
+
5H2SO4
3H3PO4
+
5CaSO4·2H2O
+ HF
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