Homework Help: Chemistry

Posted by Maya on Thursday, June 9, 2011 at 3:59am.

A certain headache relief tablet is composed of monoprotic acetylsalicylic acid(C9H8O4(s)) and an inert filler. A 4.00 g tablet was crushed and dissolved to make 40.0 mL of solution. The solution was then titrated with 0.900 mol/L NaOH(aq). The volume of NaOH(aq) needed to neutralize the dissolved tablet was 20.1 mL. The experimental value for the mass of C9H8O4(s) present in the tablet
was ___?

Chemistry - DrBob222, Thursday, June 9, 2011 at 12:36pm
moles NaOH = M x L = ? moles NaOH
moles ASA = same since the reaction (you should write the equation) is 1 mole ASA to 1 mol NaOH.
moles ASA= grams ASA/molar mass ASA.
You have moles and molar mass, solve for grams ASA.
If you want percent, then
percent ASA = (g ASA/4.00)*100 = x

Answer this Question

Related Questions

chemistry - The molecular formula of acetylsalicylic acid is C9H8O4. How many ...
chemistry - A 0.5130 g aspirin tablet which was dissolved in 95 percent ethanol ...
Chemistry - 3) A student dissolves a 1.18g aspirin tablet in water and titrates ...
College Chemistry - 1) A 25mL sample of the .265M HCI solution from the previous...
college chemistry - A 0.300 g sample of an aspirin tablet is used to prepare 100...
Chemistry - Stomach acid is 0.02M HCl. A 330mg antacid tablet is 41% magnesium ...
Chemistry - Stomach acid is 0.02M HCl. A 330mg antacid tablet is 41% magnesium ...
chemistry - A rolaids tablet contains calcium carbonate which neutralizes ...
Chemistry - This is for a titration, to measure the amount of acid that can be ...
Chemistry - Pharmacists sell tablets containing magnesium hydroxide, Mg(OH)2, to...

For Further Reading

First Name:
School Subject:
Answer: