What was the percentage by mass of ascorbic acid

Reference no: EM13856256

Ascorbic acid (vitamin C) is a diprotic acid having the formula H₂C₆H₆O₆. A sample of a vitamin supplement was analyzed by titrating a 0.2801 g sample dissolved in water with 0.0399 M NaOH. A volume of 13.68 mL of the base was required to completely neutralize the ascorbic acid. What was the percentage by mass of ascorbic acid in the sample?

?% ascorbic acid

An ore of barium contains BaCO₃. A 3.401 g sample of the ore was treated with HCl to dissolve the BaCO₃. The resulting solution was filtered to remove insoluble material and then treated with H₂SO₄ to precipitate BaSO₄. The precipitate was filtered, dried, and found to weigh 3.243 g.

What is the mass of barium in the sample?

What is the percentage by mass of barium in the ore? (Assume all the barium is precipitated as BaSO4.)

How many moles of barium were in the sample?

Reference no: EM13856256

Questions Cloud

How would you explain le chatelier''s principle : How would you explain Le Chatelier's Principle if two reactants on one side were a gas and a liquid and the reactants on the other side were a solid and a gas?

Providing information about the companys products : In addition to providing information about the company's products, the Goodyear tire and Rubber Company's website helps consumers find the exact products they want and will even direct them to the nearest Goodyear retailer.

Calculate the molarity (m) of a solution of the strong base : Calculate the molarity (M) of a solution of the strong base RbOH if the pH is 10.4.

How does danny influence members of the running group : Here are the questions for the case titled; Donny is my Leader, located in the Doc Sharing Area. Please respond individually and to the postings of your fellow students. Why do you think that Donny is the leader of the running group? How does Danny i..

What was the percentage by mass of ascorbic acid : Ascorbic acid (vitamin C) is a diprotic acid having the formula H2C6H6O6. A sample of a vitamin supplement was analyzed by titrating a 0.2801 g sample dissolved in water with 0.0399 M NaOH. A volume of 13.68 mL of the base was required to completely ..

Is the document visually inviting : Aziza is applying to various colleges and is required to write an essay about her ambitions for each college. After spending weeks on the essay, she has finally completed it. Before submitting it, she wants to revise it a few times. Is the document v..

The half-truths about business writing : Which of the following statements is true of the half-truths about business writing?(a) never forget to acknowledge your source if you have borrowed words or ideas. (a) Never use "you" because it is too informal. (c) Never use "but" to begin a senten..

Developing code of ethics for your organization : Developing a code of ethics for your organization (a health system of 10 hospitals and 22 outpatient clinics). You will need to address your company's values, illustrate conflicts of interest, and discuss how you will implement effective training to ..

Always use a short word instead of a long word : While choosing appropriate words for business writing, which of the following is true? (a) always use a short word instead of a long word. (b) use a short word instead of a long word, even if the long word is more familiar. (c) use a long word if you..

User Account

All Pages