A(n) acts to increase the hydrogen ion concentration of a solution. A(n) acts to decrease the hydrogen ion concentration of a solution. A(n) acts to maintain a relatively stable concentration of hydrogen ions in a solution. As the hydrogen ion concentration of a solution decreases, the pH . As the pH of a solution increases, the concentration of ions increases. The pH of a solution is defined as the of the hydrogen ion concentration.

Explanation:

An acid acts to increase the hydrogen ion concentration of a solution. A base acts to decrease the hydrogen ion concentration of a solution. A buffer acts to maintain a relatively stable concentration of hydrogen ions in a solution. As the hydrogen ion concentration of a solution decreases, the pH rises. As the pH of a solution increases, the concentration of hydroxide ions increases. The pH of a solution is defined as the negative logarithm of the hydrogen ion concentration.

1 a

2 d

3 a

4 c

explanation:

b is the correct answer

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