Acid-Base Concepts and pH_Pre-Lecture1

Front

According to the Brønsted–Lowry definition, an acid is a substance that:

Back

Donates a proton (H⁺)

Front

Black coffee has a pH of about 5. Which statement is correct?

Back

It is slightly acidic.

Front

Which of the following pairs are conjugate acid–base partners? H₂O and OH⁻ , HCl and NaCl
,
Na⁺ and NaOH
, d) NH₃ and OH⁻

Back

H₂O and OH⁻

Front

At 25 °C, the concentration of H⁺ ions in pure water is 1.0 × 10⁻⁷ M. What is the pH of pure water?

Back

7.0

Front

Which scenario best illustrates the importance of acid–base chemistry in biology?

Back

The body maintaining blood pH close to 7.4