Question

question 11 1 pts when a base is added to water, the ph should ______.
○ decrease
○ increase
○ stay the same.
○ cant tell without testing.
question 12 1 pts call a molecule that binds up excess hydrogen ions in a solution ______.
○ donator
○ base
○ beta-particle

Explanation:

Question 11

Water has a neutral pH (around 7). Bases are substances that increase the hydroxide ion ($\ce{OH^-}$) concentration in solution. The pH scale is related to the hydrogen ion ($\ce{H^+}$) concentration by the formula $\text{pH} = -\log[\ce{H^+}]$. When a base is added to water, it reacts to decrease $[\ce{H^+}]$ (since $\ce{OH^- + H^+
ightarrow H_2O}$), and a lower $[\ce{H^+}]$ means a higher pH (because the negative log of a smaller number is larger). So the pH should increase.

A base is defined as a substance that can accept (bind up) hydrogen ions ($\ce{H^+}$) in a solution. A "donator" (should be "donor") would be a substance that donates $\ce{H^+}$ (an acid), and a beta - particle is a type of subatomic particle in nuclear physics, not related to binding $\ce{H^+}$ in a solution. So the molecule that binds up excess hydrogen ions in a solution is a base.

Answer:

B. increase

Question 12