OHST Practice Exam

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Prepare for the OHST Test with flashcards and multiple choice questions, each question has hints and explanations. Excel in your exam!

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What does a pH of 1.5 indicate about the cargo?

Cargo has a flashpoint below 100F
Cargo has a flashpoint above 100F
Cargo is an acid
Cargo is a base

The correct answer is: Cargo is an acid

A pH of 1.5 indicates that the cargo is highly acidic. The pH scale ranges from 0 to 14, with values below 7 representing acidic conditions, values of 7 indicating neutrality, and values above 7 denoting basicity (alkalinity). Since a pH of 1.5 is well below the neutral point, this strongly suggests that the substance in question is an acid. Acids can be identified not only by their low pH values but also by their ability to donate hydrogen ions (H+) in solution, further confirming that a pH of 1.5 is characteristic of an acidic substance. Therefore, the correct interpretation of a pH value of 1.5 is that it indicates the cargo is indeed an acid. The other options do not accurately reflect the implications of such a low pH. Specifically, flashpoints pertain to the volatility of a material and are not directly related to its acidity or basicity. Hence, the answers relating to flashpoints do not align with the chemical properties indicated by a pH of 1.5, affirming that the best choice is that the cargo is an acid.