A sample of compound $X$ that contains impurities has a melting point of $120\,^{\circ}\text{C}$. $X$ is then purified, and its melting point is measured once more. Which row is correct?
Chemistry 5070 · O Level · Separation and purification
Chemistry 5070 · O Level · Separation and purification
A sample of compound $X$ that contains impurities has a melting point of $120\,^{\circ}\text{C}$. $X$ is then purified, and its melting point is measured once more. Which row is correct?