Acids and Bases I | Chemistry | Quiz

A hydrogen ion, H+, is the same as a(n):

neutron

electron

proton

hyrdoxide ion
Acidic foods can be identified by what taste?

salty

sour

bitter

sweet
OH- is called the:

hydrate ion

hydrogen ion

hydronium ion

hydroxide ion
Acids increase the concentration of what in water?

H+ ions

hydrate ions

hydroxide ions

OH- ions
According to the Brønsted-Lowry definition, bases are defined as:

Molecules that dissociate to release OH- ions

proton acceptors

proton donors

Molecules that dissociate to release protons
What is the concentration of H+ in pure water?

1 x 10^-13 moles/liter

1 x 10^-14 moles/liter

1 x 10^-7 moles/liter

1 x 10⁷ moles/liter
A solution with a pH of 11 has a H+ concentration of:

1 x 10^-11 moles/liter

1 x 10^-3 moles/liter

1 x 10¹¹ moles/liter

1 x 10³ moles/liter
Which substance has the lowest pH?

milk

NaOH

pure water

lemon juice
An unknown substance is added to a solution and the pH increases. The substance is:

an acid

a base

a solvent

sweet
You have a beaker containing 500 mL of a strong base, and you titrate it with 1M HCl until your pH 7 indicator just turns color, and then stop. The solution:

Has become acidic

Has been diluted

Has been neutralized

Will continue to change color
In the titration above, the color change happens after you’ve added 250 ml of the 1M HCl. What is the molarity of the strong base?

1.00 M

.0500 M

0.250 M

0.125 M