A chemistry student weighs out 0.120 g of ascorbic acid into a 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.0700 M NaOH solution. Calculate the volume of solution the student will need to add to reach the equivalence point. Be sure your answer has the correct number of significant digits.

9.734 mL

Explanation:

First we calculate the moles of ascorbic acid, using its molecular weight:

Because NaOH and ascorbic acid react in a 1:1 ratio, we would need 6.813x10⁻⁴ moles of NaOH to titrate the acid solution.

Now we calculate the volume required of the NaOH solution:

If we multiply by 1000 our answer becomes 9.734 mL

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chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.