Respan Dataset Explorer

In a basic solution the
Question 7 options:

concentration of hydronium ion is greater than that of hydroxide ion.

concentration of hydroxide ion is greater than that of hydronium ion.

concentration of hydronium ion and hydroxide ion are equal.
Question 8 (1 point) 

Listen
What is the pH of a solution whose H3O+ concentration is 1 x 10–9 M?

Question 8 options:

1

–9

9

–1

Question 7: concentration of hydroxide ion is greater than that of hydronium ion.
Question 8: 9

What is the concentration of a HCl solution if 20.0 mL of the solution is neutralized by 15.0 mL of a 0.10 M Ca(OH)2 solution?

2 HCl + Ca(OH)2 --> CaCl2 + 2 H2O

Question 9 options:

0.075 M

0.15 M

0.038 M

0.13 M
Question 10 (1 point) 

Listen
In which of the following combinations will the acid and base combine to form calcium sulfate?

Question 10 options:

CaOH and H2SO3


Ca(OH)2 and H2SO3


CaOH and H2SO4


Ca(OH)2 and H2SO4

Question 9: 0.075 M
Question 10: Ca(OH)2 and H2SO4

Which of the following is the pH of a solution in which the concentration of hydroxide ion is greater than the concentration of hydrogen ion?
Question 11 options:

6

7

13

2
Question 12 (2 points) 

Listen
What is the net ionic equation when hydrobromic acid reacts with potassium hydroxide?
Question 12 options:

K+ + OH– → KOH


H+ + OH– → H2O


H+ + Br– → HBr


K+ + H–→ KH

Question 11: 13
Question 12: H+ + OH– → H2O

A chemical reaction A <--> B is said to be in equilibrium when complete conversion of A to B has taken place

Question 13 options:

conversion of A to B is only 50% complete

only a fraction of conversion of A to B has taken place

the rate of transformation of A to B is equal to the rate of transformation of B to A in the system
Question 14 (1 point) 

Listen
In which direction will the point of equilibrium shift when a catalyst is added to thefollowing equilibrium system?



Question 14 options:

shift to the right

shift to the left

no shift

Question 13: the rate of transformation of A to B is equal to the rate of transformation of B to A in the system.
Question 14: no shift

In which direction will the point of equilibrium shift when temperature is increased in the following equilibrium?



Question 15 options:

shift to the right

shift to the left

no shift
Question 16 (1 point) 

Listen
In which direction will the point of equilibrium shift when temperature is decreased in the following equilibrium?



Question 16 options:

shift to the right

shift to the left

no shift

Question 15: shift to the right
Question 16: shift to the left

In which direction will the point of equilibrium shift when the pressure is decreased in the following equilibrium?

H2 (g) + Cl2 (g) <--> 2 HCl (g)

Question 17 options:

shift to the right

shift to the left

no shift
Question 18 (1 point) 

Listen
In which direction will the point of equilibrium shift when the volume of the reaction vessel increases in the following equilibrium?

2 HI (g) <--> H2 (g) + I2 (g)

Question 18 options:

shift to the right

shift to the left

no shift

Question 17: shift to the right
Question 18: shift to the left

In which direction will the point of equilibrium shift when the volume of the reaction vessel decreases in the following equilibrium?

2 SO3 (g) <--> 2 SO2 (g) + O2 (g)

Question 19 options:

shift to the right

shift to the left

no shift
Question 20 (1 point) 

Listen
In the following equilibrium; as H2(g) is removed, the concentration of HI (g) will

H2 (g) + I2 (g) <--> 2 HI (g)

Question 20 options:

increase.

decrease.

remain the same.

Question 19: shift to the left
Question 20: remain the same.

In the following equilibrium, when Fe3+ ion is added, the concentration of Fe(SCN)2+ ion will

Fe3+ + SCN- <--> Fe(SCN)2+

Question 21 options:

increase.

decrease.

remain the same.
Question 22 (1 point) 

Listen
In the following equilibrium; as HI(g) is added, the concentration of H2 (g) will

H2 (g) + I2 (g) <--> 2 HI (g)

Question 22 options:

increase.

decrease.

remain the same.

Question 21: increase.
Question 22: decrease.

Calculate the value of Keq for the following equilibrium when [ H2 ] = 0.228 M, [ I2 ] = 0.228 M, and [ HI ] =1.544 M.

H2 (g) + I2 (g) <--> 2 HI (g)

Question 23 options:

29.7

0.0337

0.0219

45.9
Question 24 (1 point) 

Listen
Which Keq value indicates the greatest concentration of products at equilibrium assuming similar stoichiometry?

Question 24 options:

6.7 x 105


3.2 x 10-7


1.4 x 10-3


3.2 x 109

Question 23: 29.7
Question 24: 3.2 x 109

 (1.544)^2 / (0.228 * 0.228) = 2.382736 / 0.052224

The result of (1.544)^2 / (0.228 * 0.228) is approximately 10.525.