2. A solubilidade do hidróxido de cálcio é de 1,6 g/dm3, à temperatura de 20 °C.
a. Indica o significado da afirmação anterior.
b. Qual é a massa de hidróxido de cálcio que é
possível dissolver em 50 cm de água?

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.