638 Answered Questions for the topic AP chemistry

Ap Chemistry Science Chemistry

04/21/18

Given the reaction of diamond converting to graphite
2C (s diamond)==>2C (s graphite)   Determine ΔG at 298L and determine if this reaction is spontaneous or not. What does the ΔG say about the rate of this reaction?   ΔH°f (C (s)... more
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Ap Chemistry Science Chemistry

04/21/18

Which of the following changes in states represent the smallest Delta S. Which has the largest Delta A. Explain
A. The freezing of water to ice B. Melting of ice to liquid water C. Sublimation of ice to gas
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Ap Chemistry Science Chemistry

04/21/18

Determine whether each of the following is an increase or decrease in entropy
A. Fusion  B. Freezing C. Combustion
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Ap Chemistry Science Chemistry

04/15/18

How do I solve this problem on the concentration of fluorine
If a constant  [F-] is maintained in a solution in which the initial  [Ca2+ ] =0.038M, what percentage of Ca 2+ will remain in solution after the CaF2 precipitate. What [F-] should be maintained to... more
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Ap Chemistry Science Chemistry

04/15/18

How do I solve this AP Chemistry problem on silver and bromine
Silver ion and bromine ion precipitate into AgBr (s). The Ag+ concentration is about 0.065M. If the Br- concentration remains at 1.0×10^17M. What will be the remaining concentration of  Ag+ when... more
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Ap Chemistry Science Chemistry

04/14/18

How do I solve this problem on potassium chromate?
A concentrated solution of potassium chromate is added to a solution that is 0.1M Ba 2+ and 0.1M Sr 2+. Which ion will precipitate first? What is the percentage of ion remaining when the other ion... more
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Ap Chemistry Science Chemistry

04/14/18

The solubility of AlF3 (s) in 1.5M OH-(aq)=2.0×10^-4 mol/L
Given that the Ksp of AlF3 is 3.7×10^-9. What is the value of Kf for Al (OH)3?
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Ap Chemistry Science Chemistry

04/14/18

Which of the following solids are more soluble in an acidic solution than in pure water?
NaCl, Fe (OH)2, CaF2, ZnCO3, or C5H4CO2H?
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Ap Chemistry Science Chemistry

04/14/18

The solubility of Ba (OH)2 in a particular solution is 0.5 g/L. What is the pHone of the buffer solution?
The Ksp is 5.0×10^-3
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Ap Chemistry Science Chemistry

04/14/18

0.23M Na+ is added to a solution of 0.45M Cl- and 0.48M OH-
A. Should NaCl problem NaOH precipitate first?   B. What concentration of [OH-] is required for the precipitation?
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Ap Chemistry Science Chemistry

04/14/18

0.01M Cu+ and 0.01M Ag+ are in solution. A piece of solid NaI is put inside. What is the concentration of Ag+ as soon as the CuI begins to precipitate?
0.01M Cu+ and 0.01M Ag+ are in solution. A piece of solid NaI is put inside. What is the concentration of Ag+ as soon as the CuI begins to precipitate?
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Ap Chemistry Science Chemistry

04/14/18

There are 320g of Na+ per kg of water
A. Should NaOH precipitate when [OH-]=1.57×10^-3M?   B. Is it possible  for Na and Cl to be separated in the water?
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Ap Chemistry Science Chemistry

04/14/18

If the Ksp of Zn (CN)2 (s) is 3×10^-16, what percentage of Zn2+ is precipitated when we know that
[Zn 2+]=0.36M [CN-]=5×10^-3M Ksp=3×10^-16
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Ap Chemistry Science Chemistry

04/14/18

How do I solve this AP Chemistry problem on CaF2?
If a constant  [F-]=0.003M is maintained in a solution  in which the initial [Ca2+]=0.038M, what percentage of Ca2+ will remain in  solution after CaF2 precipitates? What  [F-] should be maintained... more
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Ap Chemistry Science Chemistry

04/14/18

How do I solved this AP Chemistry problem on AgBr?
Silver ion and bromine ion precipitate into AgBr (s). The Ag+ concentration is about 0.065M. If the Br- concentration remains 1.0×10^17M, what will be the remaining concentration of Ag+ when the... more
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Ap Chemistry Science Chemistry

04/14/18

When 70.0mL of sample of 0.372M Na2SO4 is added to 100 mL of 0.138M Ca (NO3)2 What percentage of Ca 2+ remains unprecipitated?
When 70.0mL of sample of 0.372M Na2SO4 is added to 100 mL of 0.138M Ca (NO3)2 What percentage of Ca 2+ remains unprecipitated?
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Ap Chemistry Science Chemistry

04/12/18

What concentration of Mg 2+ ions will reImain in solution after adding NaOH to a solution composed of 200.0mL of 0.01M Mg 2+ and 0.005M Ca2+?
What concentration of Mg 2+ ions will remain in solution after adding NaOH to a solution composed of 200.0mL of 0.01M Mg 2+ and 0.005M Ca2+?
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Ap Chemistry Science Chemistry

04/12/18

When 310 mL of 0.460M CaS is added to 310.0mL of 0.112M NaNo3, what percentage of the Na+ is left unprecipitatated?
When 310 mL of 0.460M CaS is added to 310.0mL of 0.112M NaNo3, what percentage of the Na+ is left unprecipitatated?
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Ap Chemistry Science Chemistry

04/12/18

4.7 mL of 0.35M KI are added to 150.0mL of 0.069M Pb (NO3)2 Will a precipitate of lead iodide be formed?
The following reaction has a Ksp of 7.1×10^-9   PbI2 (s) <==> Pb 2+ (aq) + 2I- (aq)
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Ap Chemistry Science Chemistry

04/12/18

How do I solve this AP Chemistry problem on precipitation?
Can Ce (IO3)3 precipitate when adding together 100mL of 1.0×10^-2 M Ce (NO3)3 and 200mL of 2.0×10^-3 M KIO3?   Ksp=1.9×10^-10
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Ap Chemistry Science Chemistry

04/12/18

Will a precipitate of lead (II) occur if there drops of 0.20M KI are added to 100.0 mL of 0.010M Pb (NO3)2?
Assume that 1 drop= 0.05mL.
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Ap Chemistry Science Chemistry

04/12/18

Silver chromate is dissolved in 0.1M AgNO3. What affect does the common ion have of the solubility?
Ksp= 9×10^-12   Molar solubility= 1.3
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Ap Chemistry Science Chemistry

04/12/18

A sample of water is saturated with Mg (OH)2 ). The sample has an Mg2+ content of 45 ppm. What is the OH- content of the water in ppm?
A sample of water is saturated with Mg (OH)2 ). The sample has an Mg2+ content of 45 ppm. What is the OH- content of the water in ppm?
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Ap Chemistry Science Chemistry

04/12/18

Which of the following would be more soluble in an acidic solution?
Zn (OH)2, KBr, AlCl3, or PbS?
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Ap Chemistry Science Chemistry

04/12/18

How do I write the solubility equillibrim equations that are described by the following Ksp?
A. Ksp= [Pb 2+][Cl-]^2   B. Ksp=[Mg 2+]^3 [PO4 3-]^3   C. Ksp= [Sr 2+][CO2 3-]   D. Ksp= [Hg2 2+][ Cl-]^2
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