Homework GOB Week 4

Navigation » List of Schools » West Los Angeles College » Chemistry » Chem 051 – Fundamentals of Chemistry » Winter 2021 » Homework GOB Week 4

Need help with your exam preparation?

Existing Quiz Clients Login here

Below are the questions for the exam with the choices of answers:

Try The Exam

Question #1

For many reactions of acids with bases, the resulting products are a salt and water.

A TRUE

B FALSE

Question #2

An aqueous solution with [OH-] = 1.0 x 10-12 has a pH of 12.0.

A TRUE

B FALSE

Question #3

In any water solution, [H3O+] [OH-] = 1.0 x 10-7.

A FALSE

B TRUE

Question #4

A solution with a pH greater than 7 is basic.

A FALSE

B TRUE

Question #5

An acidic solution has a pH less than 7.0.

A FALSE

B TRUE

Question #6

If the carbon dioxide level in the blood is too high, more carbonic acid is produced, and this results in the condition termed acidosis.

A TRUE

B FALSE

Question #7

According to the Bronsted-Lowry definition,

A a base is a proton donor.

B a base produces H+ ions in aqueous solutions.

C a base is a proton acceptor.

D an acid acts as the solvent.

E an acid is a proton acceptor.

Question #8

25.0 mL of 0.212 M NaOH is neutralized by 13.6 mL of an HCl solution. The molarity of the HCl solution is

A 0.390 M.

B 0.115 M.

C 0.500 M.

D 0.212 M.

E 0.137 M.

Question #9

Which of the following is a neutralization reaction?

A KCl + NaNO3 → KNO3 + NaCl

B 2NO2 → 2NO + O2

C H2O + SO3 → H2SO4

D HNO3 + KOH → H2O + KNO3

Question #10

The neutralization reaction between Al(OH)3 and HNO3 produces the salt with the formula

A AlNO3.

B Al(NO3)3.

C H2O.

D NO3OH.

Question #11

Which of the following is the correctly balanced equation for the complete neutralization of H3PO4 by Ca(OH)2?

A 3H3PO4 + Ca(OH)2 → Ca3(PO4)2 + 5H2O

B H3PO4 + Ca(OH)2 → Ca3(PO4)2 + H2O

C 2H3PO4 + 3Ca(OH)2 → Ca3(PO4)2 + 6H2O

D 4H3PO4 + 6Ca(OH)2 → 2Ca3(PO4)2 + 12H2O

E H3PO4 + Ca(OH)2 → CaHPO4 + 2H2O

Question #12

In a neutralization reaction

A an acid and a base react to form a salt and water.

B an acid and a salt react to form water and a base.

C a base and a salt react to form water and an acid.

D water and a salt react to form an acid and a base.

E two acids react to form water.

Question #13

An acid and base react to form a salt and water in a(n) ________ reaction.

A neutralization

B ionization

C reduction

D dissociation

E oxidation

Question #14

Ammonium hydroxide is a weak base because

A it is a dilute solution.

B it dissociates only slightly in water.

C it is only slightly soluble in water.

D it is completely ionized in aqueous solution.

E is a poor acceptor of protons.

Question #15

A solution with [ OH-] of 5 x 10-3 has a pH of ________.

A 11.7

B -2.3

C 7.0

D 2.3

E 5.0

Question #16

The name given to an aqueous solution of HBr is

A hydrogen bromide.

B hypobromous acid.

C bromous acid.

D bromic acid.

E hydrobromic acid.

Question #17

Which of the following is the strongest acid?

A NaOH

B H3PO4

C NH4+

D HCl

E H2CO3

Question #18

The [H3O+] of a solution with pH = 8.7 is

A 2 x 10-9 M.

B 5.3 M.

C 5 x 10-6 M.

D 8.7 M.

E 8.7 x 10-1 M.

Question #19

The [H3O+] of a solution with pH = 2.0 is

A 1 x 10-12 M.

B 1 x 10-2 M.

C 1 x 102 M.

D -10 M.

E 10 M.

Question #20

What is the pH of a solution with [OH-] = 1 x 10-4 M?

A 1.0 x 10-10

B -10.0

C 4.0

D 10.0

E -4.0

Question #21

What is the [OH-] in a solution that has a [H3O+] = 1 x 10-6 M?

A 1 x 10-2 M

B 1 x 10-10 M

C 1 x 10-12 M

D 1 x 10-6 M

E 1 x 10-8 M

Question #22

What is the [H3O+] in a solution with [OH-] = 1 x 10-12 M?

A 1 x 10-2 M

B 1 x 102 M

C 1 x 10-7 M

D 1 x 10-8 M

E 1 x 10-12 M

Question #23

For Kw, the product of [H3O+] and [OH-] is

A 1.0 X 1014

B 1.0 X 10-14

C 1.0 X 10-1

D 1.0

E 1.0 X 10-7

Question #24

In water, a substance that ionizes completely in solution is called a

A semiconductor.

B weak electrolyte.

C nonconductor.

D strong electrolyte.

E nonelectrolyte.

Question #25

What mass of KCl is in 350 mL of 0.24 M KCl?

A 18 g

B 0.84 g

C 1.1.g

D 6.3 g

E 84 g

Question #26

What volume of 0.10 M NaOH can be prepared from 250. mL of 0.30 M NaOH?

A 0.75 L

B 0.083 L

C 750 L

D 0.25 L

E 0.075 L

Question #27

What is the molarity of a solution which contains 58.5 g of sodium chloride dissolved in 0.500 L of solution?

A 4.00 M

B 1.50 M

C 0.500 M

D 2.00 M

E 1.00 M

Question #28

The molarity (M) of a solution refers to

A grams of solute/100 mL of solution.

B moles of solute/L of solution.

C grams of solute/L of solution.

D moles of solute/100 mL of solution.

E moles of solute/ L of solvent.

Question #29

In a solution, the solvent

A is the substance present in the smallest concentration.

B is never a solid.

C can be a liquid or gas.

D can be a solid, liquid, or gas.

E is a liquid.

Question #30

The mass percent concentration refers to

A grams of solvent in 100 g of solution.

B grams of solute in 100 g of solution.

C grams of solute in 1 kg of solvent.

D grams of solute in 100 g of solvent.

E grams of solute in 1 kg of solution.

Try The Exam

Fresh Grad Lands Job as Real Estate Agent With Help from Professional Writers

Need help with your exam preparation?

Below are the questions for the exam with the choices of answers:

Christian S.

Tyra

Linda

Manush

We accept payment