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465 Answered Questions for the topic AP chemistry

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
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?
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
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
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
Ap Chemistry Science Chemistry

02/18/18

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 expression for the reaction    B. How does doubling the the concentration of... more
Ap Chemistry Science Chemistry

02/18/18

How do I solve this rate law problem on the decomposition of ammonia on a platinum surface at 856°C

In the decomposition of ammonia on a platinum surface at 856°C   2NH3(g)+==>N2(g)+3H2 (g)   Changing the concentration of nh3 has no effect on the rate.  How do I write the rate law?
Ap Chemistry Science Chemistry

02/18/18

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 if A is reduced... more
Ap Chemistry Science Chemistry

02/18/18

How do I solve this problem on equilibrium pressures?

The following equilibrium pressures at a certain temperature were observed for the reaction:   2NO2 (g)<==>2NO (g)+O2   P (NO2)=0.55atm P (NO)=6.5×10^-5 atm P (O2)= 4.5×10^-5... more
Ap Chemistry Chemistry

02/16/18

How do I solve this AP Chemistry problem?

At a given temperature, K=1.3×10^-2 for the reaction calculate values of K for the following reactions at this temperature   At a given temperature K=1.3×10^-2 for the reaction N2 (g)+3H2... more
Ap Chemistry Chemistry

02/16/18

How do I write the equilibrium expression for each of the reactions below

A.N2 (g)+O2==>2NO (g)B. 2NH (g)==>N2 (g)+ 3H2 (g)C. NH3 (g)==> 1/2N2(g)+3/2H2(g)D. 2N2 (g)+6H2 (g)==>4H3 (g)
Ap Chemistry Chemistry

02/16/18

How do I write the equilibrium expression (K) for each of the following gas phase reactions?

A.N2 (g)+O2==>2NO (g) B. 2NH (g)==>N2 (g)+ 3H2 (g) C. NH3 (g)==> 1/2N2(g)+3/2H2(g) D. 2N2 (g)+6H2 (g)==>4H3 (g)    
Ap Chemistry Science Chemistry

02/11/18

How do I solve this AP Chemistry problem on an antidote for cobra venom

You and a co-worker have developed a molecule that has shown potential as cobra antivenom  (AV). This antivenom works by binding to the venom  (V), thereby rendering it nontoxic. This reaction can... more
Ap Chemistry Science Chemistry

02/11/18

How do I solve this Chemistry problem on cobra venom

Cobra venom helps the snake secure food by binding to acetylchlorine receptors on the diaphram of a bite victim, leading to the loss of function of the diaphragm muscle tissue and eventually death.... more
Ap Chemistry Science Chemistry

02/10/18

How do I solve this AP Chemistry problem on biodiesel

In an effort to become more environmentally friendly, you have decided that your next vehicle will run on biodiesel that you will produce yourself. You have researched how to make the biodiesel in... more
Ap Chemistry Science Chemistry

02/09/18

How do I solve this AP Chemistry problem on catalysts?

 A famous chemical demonstration is the "magic genie" procedure, in which hydrogen peroxide decomposes to water and oxygen gas with the aid of a catalyst. The activation energy of this... more
Ap Chemistry Science Chemistry

02/07/18

How do I solve this AP Chemistry problem on the decomposition of HI(g)?

The activation energy for the decomposition of HI (g) to H2 (g) and I2 (g) is 186 kJ/mol. The rate constant at 555K is 3.52×10^-7 L/mol•s. What is the rate constant at 645K?
Ap Chemistry Science Chemistry

02/07/18

How do I solve this Chemistry problem on activation energy?

The rate constant  for the gas phase decomposition of N2O5 has the following temperature dependence    T (K)       k (s^-1)               4.9×10^-3 338.        5.0×10-4 318         ... more
Ap Chemistry Science Chemistry

02/07/18

How do I solve this AP Chemistry problem?

How do I calculate the activation energy for the reverse of the reaction NO(g) +CO(g) ==>NO(g) CO₂(g), given the activation energy for the forward reaction for the forward reaction is 125kJ/mol... more
Ap Chemistry

02/06/18

If 8.09 mL of .40M NiSO4 is mixed with 2.13 mL distilled water, calculate the [Ni2+] in the resulting solution

How do you calculate the Nickel in the resulting solution?
Ap Chemistry Chemistry

02/04/18

Equilibrium

What would happen if O2 were removed from the following system at equilibrium at 25 degrees C?   2NO2(g) <--> 2NO(G) + O2(G)      Kc=7.4*10^-1 a. NO2 and NO concentrations would... more
Ap Chemistry Chemistry Physics

02/03/18

AP Chemistry Rate Question

The reaction:   2NO(g) +Cl2(g)====> 2NOCl (g)   was studied at -10°C. The following results were obtained were: Rate= -(change in Cl2 concentration)/(change in time)   [NO]0 (mol/l)   ... more
Ap Chemistry Chemistry

02/01/18

Equilibrium and solubility product

In which of the following will PbBr2(s) be least soluble?   pure water 0.01M NaBr 0.01M KBr 0.02M NaBr PbBr2 will be equally soluble in all of the above solutions
Ap Chemistry Science Chemistry

01/30/18

How do I solve this problem on the freezing point of a solution?

What is the freezing point of a solution containing 27.8 g of calcium chlorine in 250 g of water? Is calcium chloride an ionic or molecular splits and why is this important?
Ap Chemistry Science Chemistry

01/24/18

How do I solve this problem on the freezing and boiling point of ethylene glycol?

What volume of ethylene glycol, C2H6O2, a nonelectrolyte, must be added to 15.0 L of water to produce an antifreeze solution with a freezing point of -25*C? What is the boiling point of the... more
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