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Easel Acid and Base Quiz

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Questions and Answers

Which of the following pH values indicates an acidic solution?

pH = 7.5

pH = 6.5

pH = 7

pH = 5 (correct)

What is a correct statement about weak acids?

Weak acids always contain C atoms

Weak acids are always colorless

A percentage dissociation of 50% is a weak acid

Weak acid molecules readily lose their acidic hydrogen atoms (correct)

Which equation represents an acid-base neutralization reaction?

HNO₃ + KOH → KNO₃ + H₂O (correct)

NaOH + HCl → NaCl + H₂O

Ba(OH)₂ + Na₂SO₄ → BaSO₄ + 2NaOH

H₂SO₄ + Zn → ZnSO₄ + H₂

If the pH of a solution increases from 4.0 to 6.0, what happens to the hydronium ion concentration?

Decreases by a factor of 100 Signup and view all the answers

The most basic oxides are formed from elements found in which part of the periodic table?

Left Signup and view all the answers

When CaO(s) reacts with water, what does the resulting solution contain?

OH and Ca ions Signup and view all the answers

What is a characteristic of acids based on the information provided?

Turn litmus paper yellow Signup and view all the answers

Which type of solution is one with a pH of 8?

Basic Signup and view all the answers

What is the pH when the hydrogen ion concentration is 1 x 10^(-3) M?

3 Signup and view all the answers

A solution with a pH of 5.0 _____.

Has a hydroxide-ion concentration of 1 x 10^(-9) M Signup and view all the answers

Which of the following chemical reactions will produce a precipitate?

Na2CO3 + CaCl2 -> CaCO3 + 2NaCl Signup and view all the answers

Which of the following is true about strong bases?

They are weak electrolytes Signup and view all the answers

In the Brønsted-Lowry definition, what is an electron-pair acceptor known as?

Lewis acid Signup and view all the answers

Which scientist's definition emphasizes the role of protons in acids and bases?

Brønsted and Lowry Signup and view all the answers

What is the pH of a 1 x 10^-4 M HCl solution?

4 Signup and view all the answers

If 50.0 mL of an HCl solution is neutralized by 40.0 mL of 0.400 M NaOH, what is the molarity of the HCl solution?

0.200 M Signup and view all the answers