Solid sodium chloride is added to a beaker containing 100.0 mL of water until the solution is saturated. Solid sodium chloride is visible at the bottom of the beaker. The The process can be represented by:
Na+ (aq) + C7- (aq) = NaCl(s)
A chemist adds concentrated hydrochloric acid to the saturated solution. What will the chemist observe?

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.