Purity and separating mixtures

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Question 22

Easy

An analytical chemist investigates the purity of four different organic samples that may contain salicylic acid. The literature melting point of pure salicylic acid is $159∘C159^\circ\text{C}$ .

\begin{array}{|c|c|}\hline \textbf{Sample} & \textbf{Melting point range } (^\circ\text{C}) \\ \hline \text{P} & 159 \\ \hline \text{Q} & 148 - 155 \\ \hline \text{R} & 135 \\ \hline \text{S} & 162 - 165 \\ \hline \end{array}

Which statement is correct?

Sample R is impure salicylic acid.

Sample S is salicylic acid containing a small amount of impurity.

Sample Q is impure salicylic acid.

All four samples contain salicylic acid.

Purity and separating mixtures

Question 22

Purity and separating mixtures Questions

Purity and separating mixtures

Question 22

Purity and separating mixtures Questions