1. the term for a solution with a low ph number, such as lemon juice or vinegar, is . 2. the 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) .