A 0.4423 g sample of pewter, containing tin, lead, copper, and zinc, was dissolved in acid....

60.1K

Verified Solution

Question

Chemistry

A 0.4423 g sample of pewter, containing tin, lead, copper, andzinc, was dissolved in acid. Tin was precipitated as SnO2Â·4H2O andremoved by filtration. The resulting filtrate and washings werediluted to a total volume of 200.0 mL. A 15.00 mL aliquot of thissolution was buffered, and titration of the lead, copper, and zincin solution required 35.87 mL of 0.001481 M EDTA. Thiosulfate wasused to mask the copper in a second 20.00 mL aliquot. Titration ofthe lead and zinc in this aliquot required 33.95 mL of the EDTAsolution. Finally, cyanide was used to mask the copper and the zincin a third 25.00 mL aliquot. Titration of the lead in this aliquotrequired 25.03 mL of the EDTA solution. Determine the percentcomposition by mass of each metal in the pewter sample

Answer & Explanation Solved by verified expert

4.0 Ratings (520 Votes)

EDTA form 11 complex with copper lead and Zinc so the total amount of copper lead zince in 200 mL of the solution in which the 04423 g of sample after removing tin was dissolved was See Answer

Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:

Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!

Become a Member