A chemist analyzes an unknown liquid. The chemist takes samples from the top, middle, and bottom of the samples. Which observation would allow the chemist to reach the conclusion that the liquid could be a pure substance?

A. All three samples have different boiling points.
B. The top and middle samples have the same boiling point, which differs from the boiling point of the bottom sample.
C. All three samples have the same boiling point.
D. The middle and bottom samples have the same boiling point, which differs from the boiling point of the top sample.

chemical properties are the characteristic of matter which can only be observed by changing the chemical identity of a sample like flammability reactivity and toxicity.

yes

explanation:

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the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.