General Chemistry II

A buffer solution is prepared by mixing equal volumes of 0.1 M acetic acid (pKa = 4.76) and 0.1 M sodium acetate. What is the pH of this buffer solution?

• pH 2

• pH 4

• pH 7

• pH 9

According to Bronsted–Lowry, an acid is defined as ______.

• An electron pair acceptor

• A hydroxide donor

• A proton acceptor

• A proton donor

A solution with a pH of 7.0 _____.

• is acidic

• is basic

• is moderate

• is neutral

According to Bronsted–Lowry, a base is defined as ______.

• An electron pair acceptor

• A hydroxide donor

• A proton acceptor

• A proton donor

What is the relationship between [H+] and pH?

• As the pH value decreases, the concentration of H+ increases.

• As the pH value decreases, the concentration of H+ also decreases.

• As the pH value increases, the concentration of H+ also increases.

• As the pH value decreases, the concentration of H+ has no significant effect.

Which of the following best defines a redox reaction?

• A reaction where atoms are rearranged to form new substances.

• A reaction where there is a transfer of electrons between species.

• A reaction where energy is released in the form of light.

• A reaction where reactants combine to form a single product.

A solution in which [OH-] exceeds [H+] is said to be _____.

• acidic

• basic

• neutral

• salt

In the reaction: 2Na + Cl2 → 2NaCl, which species is reduced?

• Na

• Cl2

• NaCl

• None of the above

pH is a measure of _____.

• density

• H+ concentration

• OH- concentration

• solute concentration

Which of the following will not conduct electricity in aqueous solution?

• Copper (II) sulfate

• Sugar

• Common salt

• None of these