What Is the PH of a Sodium Fluoride Solution Prepared

question 107

Short Answer

What is the pH of a sodium fluoride solution prepared by adding 0.4198 grams of sodium fluoride to 100.0 ml of water at 25.0 °C?
The K_a at 25.0 °C for HF is 7.2 × 10^-4.

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Definitions:

Positive Reinforcement

The addition of a stimulus to increase the probability that a behavior will be repeated.

Negative Reinforcement

A behavioral technique that involves the removal of an unpleasant stimulus to increase the likelihood of a behavior being repeated.

Positive Reinforcement

The addition of a stimulus following a desired behavior that increases the likelihood of the behavior being repeated.

Negative Punishment

A behavior modification method where something desirable is removed to decrease the likelihood of a particular behavior occurring again.