CHEM $131$

Experiment $2-$ Separation of a mixture of Benzil and Sodium Chloride Post$-$Lab Questions

Does this experiment involve physical changes, chemical changes, or both?

Identify at least one point in the process in which you observed each of the following:

$\backslash$table$[[$Homogenous mixture,$],[$Heterogeneous mixture,$],[$Pure substance,$]]$

Classify each of the substances in your unknown and Benzil $($:$(C_{14}{H}_{10}{O}_2)\}$ as ionic or covalent and then calculate the formula mass $($FM$)$ for each.

$\backslash$table$[[$Compound$,$Ionic or Covalent?,FM$],[NaCl,,],[C_{14}{H}_{10}{O}_2,,]]$

If you mistakenly add deionized water from the blue topped bottle instead of acetone from the red topped bottle, would you need to start the experiment over again?

Is the sum of $\%$NaCl and $\%$ Benzil that you obtained greater than, less than, or equal to $100\%?$ If it is not equal to $100\%,$ suggest a possible source of error based on your experimental procedure.