638 Answered Questions for the topic AP chemistry

Ap Chemistry Science Chemistry

03/11/18

How do I solve this problem on the reaction 2A+B==> C+ 2D
Consider the reaction 2A+B==> C+2D. The rate law for this reaction is first order in A and second order in B. If the rate constant at 25°C is 3.01×10^2 s^-1  find the rate of reaction when the... more
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Ap Chemistry Science Chemistry

03/11/18

How do I solve this rate law problem?
A reaction has the experimental rate law of  rate=k [A]^2   A. What happens to the rate if the concentration of A is tripled?   B. What happens to the rate if the concentration of A is  reduced... more
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Ap Chemistry Science Chemistry

03/08/18

How do I solve this problem on the reaction 4HCl+O2 <=>2Cl2+2H2O
4HCl+O2 <=>2Cl2+2H2O (all gases)   Equal numbers of moles of HCl and O2 in a closed system are allowed to reach equilibrium as represented by the equation above. Which of the following must... more
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Ap Chemistry Science Chemistry

03/08/18

How do I solve this equilibrium question?
2HI (g)==> H2+I2   A) Write the expression  for the equilibrium constant Kc for the reaction.   B) What is [HI] at equilibrium?   C) Determine the equilibrium concentrations of H2 and... more
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Ap Chemistry Science Chemistry

03/07/18

How do I solve this problem on concentration,pH, and pOH?
Calculate the Ka for a 0.100M HF solution if the [H+] concentration is 8.13×10^-3M.   What is the [H+] in a solution of phenol (C6H5OH) if the Ka is 1.02×10^-10?   Calculate the pH and pOH of... more
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Ap Chemistry Science Chemistry

03/07/18

How do I solve this rate law problem on the reaction 2A+B==>C+2D?
The rate law for this reaction is first order in A and first order in B. If the rate law constant at 25°C is 3.01×10^2 s^-1, find the rate of reaction when the concentration  of A is 0.47M and the... more
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Ap Chemistry Science Chemistry

03/07/18

How do I solve this problem on the reaction A+2B==>C
Consider the reaction A+2B==>C. The rate law for this reaction is second order in A and second order in B. If the the rate constant at 25°C is 1.25×10^-2 s^-1, find the rate of reaction when the... more
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Ap Chemistry Science Chemistry

03/07/18

How do I solve this rate law problem?
The rate for a particular reaction is Rate=[A][B]^2. If the inital concentration of B is increased from 0.1M to 0.3M, the initial rate will increase by what factor?
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Ap Chemistry Science Chemistry

03/07/18

How do I solve this problem on the reaction of 2A+B==>C+D?
For the reaction 2A+B==>C+D, if the concentration of A is doubled, the reaction rate doubles. If the concentration of B is halved, there is no change in the reaction rate.   Determine the... more
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Ap Chemistry Chemistry

03/07/18

How do I solve this problem on a first order reaction?
The reaction 2NO2 (g)+O3 (g)==>N2O5(s)+O2(g) is first order with respect to  each  reactant.    A. Write the rate law for this reaction.   B. How does doubling the concentration of NO2... more
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Ap Chemistry Science Chemistry

03/07/18

How do I solve this rate law problem?
A reaction rate has the experimental rate law of Rate=k [A]^2   A. What happens if the concentration of A is tripled?   B. What happens if the concentration of A is reduced to 1/3 its initial... more
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Ap Chemistry Science Chemistry

03/05/18

Calculate the percent dissociation of the acid in each of the following solutions?
A. 0.50M acetic acid  B. 0.050M acetic acid  C. 0.050M acetic acid    D. Use Le Chatlier's principle to explain why percent dissociation increases as the concentration of a weak acid... more
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Ap Chemistry Chemistry

03/05/18

How do I solve this AP Chemistry problem?
concentrated hydrochloric acid and 20.0 mL concentrated nitric acid to 300 mL water. More water is added until the final volume is 1.00 L. Calculate [H+], [OH-], and the pH for this solution. Hint:... more
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Ap Chemistry Science Chemistry

02/28/18

How do I identify the acid, base, conjugate acid, and conjugate base for the reaction below?
Al (H2O)6+H2O <==> H3O+Al (H2O)5(OH)
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02/26/18

Hydronium ions and water
A solution is known to have a hydronium ion concentration of 1.0*10^-6 M. What percentage of the total H3O+ ion concentration comes from the dissociation of water?   a. 1% b. 3% c. 5% d.... more
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02/26/18

Acid-base question
Which of the followings statements are true for a 1.0 M solution of the strong acid HCl in water?   a.[Cl-]>[H3O+] b.The pH is 1.00 c.[H3O+]=1.0M d.[HCl]=1.0M e.[H3O+]=[OH]- So far I have... more
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Ap Chemistry Science Chemistry

02/25/18

How do I solve this AP Chemistry problem on Equilibrium?
In which of the following systems would the number of moles of the substances present at equilibrium not be shifted by a change in the pressure of the system at constant temperature?   A. CO... more
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Ap Chemistry Science Chemistry

02/25/18

Which of the following will favor the reactants when the reaction reaches equilibrium?
A. Kc is a very small number B. Kc is a very large number C. Cannot tell without knowing the value of Kc   D. Cannot tell, since the time required  to reach equilibrium does not depend on Kc?
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Ap Chemistry Science Chemistry

02/20/18

How do I find the reference angle for the angle measuring 21pi/4 radians?
How do I find the reference angle for the angle measuring 21pi/4 radians?
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Ap Chemistry Science Chemistry

02/19/18

How do I solve this problem on the reaction 2A+B==>C+2D
Consider the reaction  2A+B==>C+2D. The rate law for this reaction is first order in A and first order in B. If the rate constant at 25°C is 3.01×10^2 s^-1, find the rate of reaction when the... more
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Ap Chemistry Science Chemistry

02/19/18

How do I solve this AP Chemistry problem on the reaction A+2B==>C.
Consider the reaction A+2B==>C. The rate law for this reaction is second order in A and second order in B. If the rate constant  at 25°C 1.25×10^-2 s^-1, find the rate  of reaction when the... more
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Ap Chemistry Science Chemistry

02/19/18

How do I solve this AP Chemistry rate law problem?
The rate expression for a particular reaction is Rate=[A][B]^2. If the initial concentration of B is increased from 0.1M to 0.3M, the initial rate will increase by what factor?
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Ap Chemistry Science Chemistry

02/19/18

For the reaction A+2B==>AB2, the following data were obtained
For the reaction A+2B==>AB2, the following data were obtained   Trial 1 Inital [A]=0.660M Initial  [B]=0.470M Initial rate (M/hr)=0.370   Trial 2 [A]=0.660M [B]=0.940 initial... more
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Ap Chemistry Science Chemistry

02/19/18

For the reaction A+B==>AB, the following data were obtained
For the reaction A+B==>AB, the following data were obtained   Trial 1 Initial  [A]=0.480 Initial  [B]=0.190 Initial rate= 0.350   Trial 2 [A]=0.480. [B]=0.380 initial rate=0.350   Trial... more
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Ap Chemistry Science Chemistry

02/19/18

How do I solve this rate law problem?
For the reaction 2A+B==>C+D if the concentration of A is doubled, the reaction doubles. If the concentration of B is halved there is no change in the reaction rate. Determine the order of... more
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