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12 Dec 2019

Exercise 15.62 Consider the following reaction: A(g)⇌2B(g) Find the equilibrium partial pressures of A and B for each of the following different values of Kp. Assume that the initial partial pressure of B in each case is 1.0 atm and that the initial partial pressure of A is 0.0 atm. Make any appropriate simplifying assumptions. Part A Kp= 2.0 Enter your answers numerically separated by a comma. Express your answer using two significant figures. pA, pB = atm SubmitMy AnswersGive Up Incorrect; Try Again; 4 attempts remaining Part B Kp= 2.0×10−4 Enter your answers numerically separated by a comma. Express your answer using two significant figures. pA, pB = atm SubmitMy AnswersGive Up Incorrect; Try Again; 5 attempts remaining Part C Kp= 1.2×105 Enter your answers numerically separated by a comma. Express your answer using two significant figures. pA, pB = atm

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Related questions

Consider the following reaction:

A(g)⇌2B(g)
Find the equilibrium partial pressures of A and Bfor each of the following different values of Kp. Assume that the initial partial pressure of B in each case is 1.0 atm and that the initial partial pressure of A is 0.0 atm. Make any appropriate simplifying assumptions.

Kp= 1.8×10−4

Enter your answers numerically separated by a comma. Express your answer using two significant figures.

A 1.0-L buffer solution is 0.125 M in HNO2 and 0.155 M in NaNO2.

Part A

Determine the concentrations of HNO2 and NaNO2 after addition of 1.8 g HCl.

Express your answers using three significant figures separated by a comma.
[HNO2], [NaNO2] = M

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Incorrect; Try Again; 3 attempts remaining

Part B

Determine the concentrations of HNO2 and NaNO2 after addition of 1.8 g NaOH.

Express your answers using three significant figures separated by a comma.
[HNO2], [NaNO2] = M

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Part C

Determine the concentrations of HNO2 and NaNO2 after addition of 1.8 g HI.

Express your answers using three significant figures separated by a comma.
[HNO2], [NaNO2] = M

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Problem 3.63

Several brands of antacids use Al(OH)3 to react with stomach acid, which contains primarily HCl: αAl(OH)3(s)+βHCl(aq)→γAlCl3(aq)+δH2O(l)

Part A

Balance this equation.

Express your answer as a balanced chemical equation. Identify all of the phases in your answer.

Al(OH)3+3HCl→AlCl3+3H2O

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Incorrect; Try Again; 5 attempts remaining

Part B

Calculate the number of grams of HCl that can react with 0.490 g of Al(OH)3.
m =

.77

 g

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Incorrect; Try Again; 4 attempts remaining

Part C

Calculate the number of grams of AlCl3 formed when 0.490 g of Al(OH)3 reacts.
m =

0.34

 g

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Incorrect; Try Again; 5 attempts remaining

Part D

Calculate the number of grams of H2O formed when 0.490 g of Al(OH)3 reacts.
m =

.77

 g

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Incorrect; Try Again; 4 attempts remaining

Problem 4.71

Indicate the concentration of each ion or molecule present in the following solutions.

Part A

0.25 M NaNO3

Express your answer numerically using two significant figures. If there is more than one answer, separate them by a comma.

0.25,0.25

 M

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Correct

Part B

1.7×10−2M MgSO4

Express your answer numerically using two significant figures. If there is more than one answer, separate them by a comma.

1.3,1.3

 M

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Incorrect; Try Again; 3 attempts remaining

Part C

2.00×10−2M C6H12O6

Express your answer numerically using three significant figures. If there is more than one answer, separate them by a comma.
M

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Part D

A mixture of 45.0mL of 0.272M NaCl and 65.0mL of 0.0247M (NH4)2CO3. Assume that the volumes are additive.

Express your answer numerically using three significant figures. If there is more than one answer, separate them by a comma.

0.0146,0.111,0.0292,0.0146

 M

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Incorrect; Try Again; 5 attempts rem

Problem 4.73

Part A

You have a stock solution of 16.0 M NH3. How many milliliters of this solution should you dilute to make 1250 mL of 0.280 M NH3?
V = mL

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Part B

If you take a 10.0-mL portion of the stock solution and dilute it to a total volume of 0.450 L , what will be the concentration of the final solution?
M =

0.022

 M

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Incorrect; Try Again; 4 attempts remaining

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