a. A student performed Part 3 of the lab. A 360 ppm Ca2+ standard required 22.34...

60.1K

Verified Solution

Question

Chemistry

a. A student performed Part 3 of the lab. A 360 ppm Ca2+standard required 22.34 mL of EDTA to reach the end point. Somewell water from my grandmaâ€™s farm required 15.47 mL of EDTA. Byproportionality to the 360 ppm standard, determine the totalconcentration of Ca2+ (in ppm) in my grandmaâ€™s well water?
b. What is the molarity of Ca2+ in the well water? (ppm standsfor parts per million. 100 ppm Ca2+ represents 100 grams of Ca2+ in1,000,000 grams of solution. Assume that the density of thesolution is 1.00g/mL).
c. If the daily recommended amount of calcium in an adultâ€™s (age19 â€“ 50) diet is 1,000 mg, how many liters of water would you needto consume to fully meet your daily calcium needs? (Seehttp://www.nlm.nih.gov/medlineplus/ency/article/002412.htm forreference information.)

Answer & Explanation Solved by verified expert

3.7 Ratings (375 Votes)

EDTA is ethylene diamine tetraacetic acid having molecular formula H4C10H12N2O4 This compound is not very water soluble so the disodium salt is used is used for the estimation of calcium The formula of disodium salt is Na2H2C10H12N2O4 Let us suppose that Y stand for C10H12N2O4 Thus the disodium salt now is Na2H2Y The 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