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DO NOW - AP - pH and Solubility

Authored by Carrie Woodward

Chemistry

12th Grade

Used 1+ times

DO NOW - AP - pH and Solubility
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8 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following equation represents the equilibrium equation of solubility of Cr(OH)3 in water ?

Cr(OH)3(s) ↔ Cr3+(aq) + OH3-(aq)

Cr(OH)3(s) ↔ Cr+(aq) + OH3-(aq)

Cr(OH)3(s) ↔ Cr3+(aq) + 3OH-(aq)

Cr(OH)3(s) ↔ 3Cr+(aq) + OH3-(aq)

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Ag(OH)2(s ) ↔ Ag+1(aq) + 2OH-1(aq)

What shift in equilibrium causes a decrease in the solubility of silver hydroxide?

a shift to the right because there are more ions

a shift to the left because more of the solid means less has dissolved thus decreasing the solubility.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If Ksp >1, we say the salt is...

soluble

insoluble

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Adding a base to a solution does which of the following?

decreases the pH

adds hydrogen ions to the solution

adds hydroxide to the solution

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Adding an acid to a solution does which of the following?

Adds hydroxide to the solution

Adds hydrogen ions to the solution.

increases the pH

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

pH goes up (becomes more basic)

pH goes down

(becomes more acidic)

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Sr(OH)2(s) ↔ Sr+2(aq) + 2OH-1(aq)

When HCl is added: H+(aq) + OH-1(aq) → H2O(l)

What effect does the addition of the acid have on the solubility of strontium hydroxide?

the solubility increases because some of the OH-1 is removed and the equilibrium shifts to the left.

the solubility increases because some of the OH-1 is removed and the equilibrium shifts to the right

the solubility decreases because the hydroxide is removed

the acid does not affect the solubility of the magnesium hydroxide

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