The Chemical Acidity of a Solution Is Measured in Units

question 46

Multiple Choice

The chemical acidity of a solution is measured in units of pH: , where is the hydrogen ion concentration in the solution. If a sample of rain has a pH of 3.2, how many times higher is its than pure water's, which has a pH of 7?

---

Definitions:

Continuous Variables

Variables that can take on an infinite number of values or levels.

Binomial

Pertaining to a probability distribution that models the number of successes in a fixed number of trials, with only two possible outcomes.

Normal Probability Distribution

Describes a symmetrical, bell-shaped curve where most occurrences take place at the central peak and probabilities for values taper off equally on either side.

Binomial Probability Distribution

A probability distribution that summarizes the likelihood that a variable will take one of two independent values under a given set of parameters or assumptions.