Acids and Bases

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

What is the pH of an aqueous solution of C6H12O6?

7

Which substance is an electrolyte

H2SO4

Which compounds are electrolytes?

H3PO4 and Ca(OH)2

Which aqueous solution would turn blue litmus red?

HCl(aq)

Which pair of compounds represents one Arrhenius acid and one Arrhenius base?

HNO3 and NaOH

Why is potassium nitrate classified as an electrolyte?

It releases ions in an aqueous solution.

Which substance is an electrolyte?

KNO3

Which substance is an Arrhenius base?

KOH

Which two compounds are electrolytes?

KOH and CH3COOH

Which of the following is the best conductor of electricity?

NaCl(aq)

Which of these 1 M solutions will have the highest pH?

NaOH

How are HNO3 (aq) and CH3COOH (aq) similar?

They are Arrhenius acids and they turn blue litmus red.

If an aqueous solution turns blue litmus red which relationship exists between the hydronium ion and hydroxide ion concentrations?

[H3O+] > [OH-]

Based on the results of testing colorless solutions with indicators, which solution is most acidic?

a solution in which phenolphthalein is pink

Which change in the H+ ion concentration of an aqueous solution represents a decrease of one unit on the pH scale?

a tenfold increase

When the pH of an aqueous solution is changed from 1 to 2, the concentration of hydronium ions in the solution is

decreased by a factor of 10

As an aqueous solution becomes more acidic, the hydroxide ion concentration

decreases

The only positive ion found in H2SO4(aq) is the

hydronium ion

When dissolved in water, an Arrhenius base yields

hydroxide ions

The compound NaOH(s) dissolves in water to yield

hydroxide ions as the only negative ions

The pH of an aqueous solution changes from 4 to 3 when the hydrogen ion concentration in the solution is

increased by a factor of 10

When the concentration of hydrogen ions in a solution is decreased by a factor of ten, the pH of the solution

increases by 1

The electrical conductivity of an aqueous solution depends on the concentration of which particles in the solution?

ions

Which of the following pH values indicates the highest concentration of hydronium ions in a solution?

pH = 1

The pH of a solution is 1. The hydrogen ion concentration of this solution, in moles per liter, is

0.1

Which of the following 0.1 M solutions has the lowest pH?

0.1 M HCl

In an acid solution, the [H+] ion is found to be 1 × 10-2 mole per liter. What is the [OH-] ion in moles per liter?

1 × 10^-12

What is the OH- ion concentration, in moles per liter, of a solution with a pH of 7?

1 × 10^-7

A solution has a hydroxide ion concentration of 1 × 10^-5 M. What is the hydrogen ion concentration of the solution?

1 × 10^-9 M

What is the H+ ion concentration of an aqueous solution that has a pH of 11?

1.0 × 10^-11 mol/L

What is the pH of a 0.001 M KOH solution?

11

Phenolphthalein is pink in an aqueous solution having a pH of

12

Which sample of HCI(aq) contains the greatest number of moles of solute particles?

2.0 L of 2.0 M HCI(aq)

Which equation represent neutralization

2KOH(aq) + H2SO4(aq) --> K2SO4(aq) = 2H2O(l)

A solution with a pH of 2.0 has a hydronium ion concentration ten times greater than a solution with a pH of

3.0

Compared to a solution with a pH value of 7, a solution with a thousand times greater hydronium ion concentration has a pH value of

4

The pH of a solution is 7. When acid is added to the solution, the hydronium ion concentration becomes 100 times greater. What is the pH of the new solution?

5

What is the pH of a 0.00001 molar HCl solution?

5

An aqueous solution that has a hydrogen ion concentration of 1.0 × 10^-8 mole per liter has a pH of

8, which is basic

Three samples of the same solution are tested, each with a different indicator. All three indicators, bromthymol blue, bromcresol green and thymol blue, appear blue if the pH of the solution is

9.9

Which substance yields H+(aq) as the only positive ion in an aqueous solution?

CH3COOH

In which 0.01 M solution is phenolphthalein pink?

Ca(OH)2(aq)

Potassium hydroxide is classified as an Arrhenius base because KOH contains

OH- ions

Which statement describes an electrolyte?

When an electrolyte dissolves in water, the resulting solution conducts an electric current.

Which relationship is present in a solution that has a pH of 7?

[H+] = [OH-]

When one compound dissolves in water, the only positive ion produced in the solution is H3O+ (aq). This compound is identified as

an Arrhenius acid

Which type of substance yields hydrogen ions, H+ , in an aqueous solution?

an Arrhenius acid

Which type of substance yields hydrogen ions, H+, in an aqueous solution?

an Arrhenius acid

A student records the following observations about an unknown solution: • conducts electricity • turns blue litmus red The student should conclude that the unknown solution is most likely

an acid

What is the color of the indicator thymol blue in a solution that has a pH of 11?

blue

Which indicator is blue in a solution that has a pH of 5.6?

bromcresol green

According to the Arrhenius theory, a base reacts with an acid to produce

water and a salt


Kaugnay na mga set ng pag-aaral

AP Gov. Unit 3 Practice Questions vg

View Set

ENT - CH. 7 Financing and Accounting

View Set

Corint - Analizatorul olfactiv + gustativ

View Set

chapter 13 Research and Data Analysis (REVIEW)

View Set