Acids and Bases

Name this piece of glassware that is used in a macro-titration lab.

a. Beakerb. Dogancay dishc. Glass thingyd. Erlenmeyer flaske. Sippy cup

Name this piece of glassware that is used in a macro-titration lab

a.Tube thingy

b.Pipette

c. Buret

d.Acid dispenser

e.Moss covered family credenza

What is the name of the part that controls the flow of acid/base out of the buret?

a.Gas valve

b.Stop cock

c. On/off switch

d.Toggle switch

e.Open/close thingy

What piece of safety equipment did Beaker forget to wear today?a.earrings

b.noserings

c. goggles

d.Low-rise jeans

e.sunglasses

What is the name of the point where acid just barely neutralizes a base in a titration. Hint: the solution will look light pink if phenolthalein has been added.

a.Bomb-digity

b.Pink perfection

c. Acid point

d.End point

In the reaction, NH4+ + H2O NH3 + H3O

+, water is acting as a(n):

A) Arrhenius acid C) Bronsted-Lowry acidB) Arrhenius base D) Bronsted-Lowry base

In the reaction, CO32- + H2O HCO3

- + OH-, the carbonate ion (CO3

2-) is acting as a(n):

A) Arrhenius acid C) Bronsted-Lowry acidB) Arrhenius base D) Bronsted-Lowry base

If the hydrogen ion concentration is 1 x 10-10 M, what is the nature of the solution?

A) acidic B) basic C) neutral

 

A solution in which the hydroxide ion concentration is 1 x 10-3 M is:

A) acidic B) basic C) neutral

Which of these solution is the MOST acidic?

A) [H+] = 1 x 10-5 M C) [H+] = 1 x 10-10 MB) [OH-] = 1 x 10-12 M D) [OH-] = 1 x 10-8 M

In a neutral solution, the [H+] is:

A) 1 x 10-14 M B) zeroC) 1 x 107 M D) equal to [OH-]

If the hydrogen ion concentration is 1 x 10-11 M, what is the pH of the solution?

A) 1 B) 4 C) 7 D) 11

 

If the hydroxide ion concentration is 1 x 10-12 M, what is the pH of the solution?

A) 1 B) 2 C) 12 D) 14

Which of these is an Arrhenius base?

A) LiOH B) NH3

C) H2PO4- D) H2O

Which of the following is a Bronsted-Lowry base, but not an Arrhenius base?

A) NaOH B) Ca(OH)2 C) NH3

What products result from a neutralization reaction?

A) acids and bases C) a salt and waterB) water only D) polar covalent compounds

What is the normality of a 2.0 M solution of phosphoric acid (H3PO4)?

A) 0.67 N B) 1.5 N C) 1.0 ND) 4.0 N E) 6.0 N

Which of the following is a property of an acid?

A) sour taste C) strong colorB) non-electrolyte D) slippery feel

Which of these is a property of a base?

A) non-electrolyte C) sour tasteB) water feel D) bitter taste

What pair listed below represents a Bronsted-Lowry acid & conjugate base in this reaction?

CN- + H2O HCN + OH-

 

A) CN- and H2O B) H2O and HCN

C) CN- and HCN D) H2O and OH-

Titrations - $100

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100. mL

How much 1.50 M NaOH is necessary to exactly neutralize 20.0 mL of 2.50 M H3PO4?

Titrations - $200

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5

In a micro-titration lab, how many drops of 0.12 M NaOH will exactly neutralize 6 drops of 0.10 M HCl?

Titrations - $300

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How much 0.50 M HNO3 is necessary to titrate 25.0 mL of 0.05 M Ca(OH)2 solution to the endpoint?

5.0 mL

Titrations - $500

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What is the molarity of a NaOH solution if 15.0 mL is exactly neutralized by 7.5 mL of a 0.02 M HC2H3O2 solution?

0.01 M

Titrations - $1000

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If you found that the unknown concentration of an acid is 0.791 M, and the literature value of the acid concentration is 0.821 M, then what is your percent error?

3.65%

pH and pOH - $100

What is the pOH of a solution with a pH of 6?

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8

pH and pOH - $200

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2

What is the pH of a 0.01 M solution of HCl?

pH and pOH - $300

What is the pH of a 3.0 M solution of HF that has a 10.0% dissociation?

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0.52

pH and pOH - $500

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SALT + WATER

What two substances are formed when an acid reacts with a base?

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What two products are formed when HC2H3O2 reacts completely with NaOH?

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NaC2H3O2 + H2O