Question

match the words in the left column to the appropriate blanks in the sentences on the right. 1. the term for a solution with a low ph number, such as lemon juice or vinegar, is. 2. the term for a solution that has an equal concentration of h⁺ and oh⁻ is. 3. the term for a solution with a high ph number, such as ammonia or bleach, is. 4. an acid is a compound that donates to a solution. 5. the higher the ph number, the higher the concentration of in a solution. 6. a substance that accepts h⁺ when they are in excess and donates h⁺ when their concentration drops is called a(n).

Explanation:

1. Solutions with low pH are acidic. Lemon - juice and vinegar are examples of acidic solutions.
2. A solution with equal concentrations of \(H^+\) and \(OH^-\) is neutral.
3. Solutions with high pH are basic. Ammonia and bleach are basic substances.
4. Acids donate \(H^+\) ions to a solution.
5. The higher the pH, the higher the concentration of \(OH^-\) in a solution as pH is related to the negative logarithm of \(H^+\) concentration and \(H^+\) and \(OH^-\) concentrations are inversely related in an aqueous solution.
6. A buffer is a substance that accepts \(H^+\) when in excess and donates \(H^+\) when the concentration drops.

Answer:

1. acidic
2. neutral
3. basic
4. \(H^+\)
5. \(OH^-\)
6. buffer