Question

based on the data you collected, how would you expect soap to behave when used with hard water? select the single best answer. the amount of bubbles produced by the soap should decrease. there should be no change in either the ph or the amount of bubbles produced. the ph of the soap solution should decrease significantly. the ph of the soap solution should increase significantly. the amount of bubbles produced by the soap should increase.

Explanation:

Hard water contains dissolved calcium and magnesium ions. When soap (a sodium or potassium salt of fatty acids) is used with hard water, these ions react with the soap to form insoluble precipitates (scum), which reduces the amount of soap available to form bubbles. The pH of the soap solution is not significantly changed by hard water ions in terms of a large decrease or increase, and the bubble amount decreases, not stays the same or increases. So the correct option is the one about bubble amount decreasing.

Answer:

The amount of bubbles produced by the soap should decrease.