Acids and Bases

Conjugates

100

What is the conjugate base of H₂O?

OH^-

200

What is the conjugate acid of HSO₄^-

H₂SO₄

300

What is the conjugate base of ammonium (NH₄⁺)

NH₃

400

What is the conjugate base of HSO₄^-?

SO₄^-2

500

What is the conjugate acid of CH₃(CH₂)₃NH₂

CH₃(CH₂)₃NH₃⁺

PH and POH

100

What is the pOH of a pH 0.5 solution?

13.5

200

What is the hydroxide ion concentration of a solution of pH 3?

1.0 x 10^-11

300

What is the hydronium ion concentration of a pH 6.725 solution?

1.88 x 10^-7

400

A litmus paper indicator will turn _________ when base is present.

Blue

500

If the hydroxide ion concentration is 9.860 x 10^-2, what is the hydronium ion concentration? What is the pH

1.014 x 10^-13 = [H₃O⁺]

13 = pH 

Ka

100

The higher the Ka, the ________ the acid.

Stronger

200

The higher the pKa, the _________ the acid.

Weaker

300

The higher the Ka, the _________ the base.

Weaker

400

The higher the pKa, the __________ the base.

Stronger

500

One mole of HCN is added to a 250 mL beaker and filled to the top with water. A student tests the pH of the solution and finds it to be about 4.3. What is the Ka of HCN?

6.28 x 10^-10

General Chemistry

100

What is the trends for atomic radii?

Increases going to the bottom left/ decreases going to the top right

200

This element is often noted as the basis of life

Carbon

300

What is the molecular geometry of water? What is the molecular shape?

Tetrahedral and bent

400

What is the hybridization of C in carbon dioxide?

sp

500

This scientist is credited for discovering the photoelectric effect

Who is Einstien?