Molarity of silver ion in the original solution if 25.0 mL of silver nitrate solution reacts with excess potassium chloride solution to yield 0.842 g of precipitate is to be calculated. Concept introduction: Precipitation reaction involves the reaction of two soluble ionic compounds to form an insoluble product. The insoluble product is known as a precipitate. The reason for the precipitation reaction to occur is the formation of a product that is insoluble in nature. The reaction of silver nitrate solution and potassium chloride is an example of precipitation reaction. AgNO 3 ( a q ) + KCl ( a q ) → AgCl ( s ) + KNO 3 ( a q ) According to the solubility rules, all the common nitrates are soluble but AgCl is insoluble in nature.
Molarity of silver ion in the original solution if 25.0 mL of silver nitrate solution reacts with excess potassium chloride solution to yield 0.842 g of precipitate is to be calculated. Concept introduction: Precipitation reaction involves the reaction of two soluble ionic compounds to form an insoluble product. The insoluble product is known as a precipitate. The reason for the precipitation reaction to occur is the formation of a product that is insoluble in nature. The reaction of silver nitrate solution and potassium chloride is an example of precipitation reaction. AgNO 3 ( a q ) + KCl ( a q ) → AgCl ( s ) + KNO 3 ( a q ) According to the solubility rules, all the common nitrates are soluble but AgCl is insoluble in nature.
Molarity of silver ion in the original solution if 25.0 mL of silver nitrate solution reacts with excess potassium chloride solution to yield 0.842 g of precipitate is to be calculated.
Concept introduction:
Precipitation reaction involves the reaction of two soluble ionic compounds to form an insoluble product. The insoluble product is known as a precipitate.
The reason for the precipitation reaction to occur is the formation of a product that is insoluble in nature. The reaction of silver nitrate solution and potassium chloride is an example of precipitation reaction.
AgNO3(aq)+KCl(aq)→AgCl(s)+KNO3(aq)
According to the solubility rules, all the common nitrates are soluble but AgCl is insoluble in nature.
LTS
Solid:
AT=Te-Ti
Trial 1
Trial 2
Trial 3
Average
ΔΗ
Mass water, g
24.096
23.976
23.975
Moles of solid, mol
0.01763
001767
0101781
Temp. change, °C
2.9°C
11700
2.0°C
Heat of reaction, J
-292.37J -170.473
-193.26J
AH, kJ/mole
16.58K 9.647 kJ 10.85 kr
16.58K59.64701
KJ
mol
12.35k
Minimum AS,
J/mol K
41.582
mol-k
Remember: q = mCsAT (m = mass of water, Cs=4.184J/g°C) & qsin =-qrxn &
Show your calculations for:
AH in J and then in kJ/mole for Trial 1:
qa (24.0969)(4.1845/g) (-2.9°C)=-292.37J
qsin =
qrxn =
292.35 292.37J
AH in J = 292.375 0.2923kJ
0.01763m01
=1.65×107
AH in kJ/mol =
=
16.58K
0.01763mol
mol
qrx
Minimum AS in J/mol K (Hint: use the average initial temperature of the three trials, con
Kelvin.)
AS=AHIT
(1.65×10(9.64×103) + (1.0
Jimai
For the compound: C8H17NO2
Use the following information to come up with a plausible structure:
8
This compound has "carboxylic acid amide" and ether functional groups.
The peaks at 1.2ppm are two signals that are overlapping one another.
One of the two signals is a doublet that represents 6 hydrogens; the
other signal is a quartet that represents 3 hydrogens.
Vnk the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest bolling
point, choose 2 next to the substance with the next highest boiling point, and so on.
substance
C
D
chemical symbol,
chemical formula
or Lewis structure.
CH,-N-CH,
CH,
H
H 10: H
C-C-H
H H H
Cale
H 10:
H-C-C-N-CH,
Bri
CH,
boiling point
(C)
Сен
(C) B
(Choose
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