I need the answer as soon as possible In UV/Vis spectrometry calculating the iron in aniron tablet, when preparing the sample, an irontablet is added to HCl and heated. Next, it isfiltered and diluted. Ammonia solution is added toset the pH to 3.5, then hydroquinone and o-phenanthroline are added. After waiting 10minutes, the absorbance is measured.(1) Why is the sample heated after HCI is added?What would happen if it is not heated?(2) What sort of side products are produced thatfiltration is necessary?(3) Why is the pH set at 3.5? Why is such a pHnecessary for the iron to react with hydroquinoneand o-phenanthroline? (please be specific)(4) Why do we have to wait 10 minutes beforemeasuring the absorbance?Thank you!

1) Answer - According to the question - HCl is added to the sample and the sample is heated to…

In UV/Vis spectrometry calculating the iron in an iron tablet, when preparing the sample, an iron tablet is added to HCl and heated. Next, it is filtered and diluted. Ammonia solution is added t set the pH to 3.5, then hydroquinone and o- phenanthroline are added. After waiting 10 minutes the a bsorba nce is measured

In UV/Vis spectrometry calculating the iron in an iron tablet, when preparing the sample, an iron tablet is added to HCl and heated. Next, it is filtered and diluted. Ammonia solution is added t set the pH to 3.5, then hydroquinone and o- phenanthroline are added. After waiting 10 minutes the a bsorba nce is measured

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

No work needed just answers label the answers with questions so I know directions are all the same
An inhaler contains 200 metered doses. If the patient inhales two doses three times a day, how long will the ?inhaler last
Consider the transportation sector. What impact will new technology have on this sector during the next ten years?
10 ut of Compute the amount of medication that will be given to administer one dose of the following medication orders. Round all parenteral administration orders that are over 1 mL to one decimal place. Round all parenteral administration orders under 1 mL to two decimal places. Do not include zeros at the end of decimal numbers. The problems and drug orders are presented for practice only, and actual prescribed dosages will vary according to a patient's age, condition, reaction, additional medications, and other factors. Order: Valium 3 mg IM q.6h p.r.n., pain Supply: Give: Valium 10 mg/2 mL mL
minimum 6 sentences Future trends in green chemistry (
The length of a single bond joining two carbon atoms together is approximately 0.00000000015 m. Express this number in scientific notation.
Ag+KNO3
A chemist working as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the cabinet is used to store bottles of dimethyl sulfoxide, ethanolamine, tetrahydrofuran, methyl acetate, and diethylamine. The chemist plans to try to identify the unknown liquid by measuring the density and comparing to known densities. First, from her collection of Material Safety Data Sheets (MSDS), the chemist finds the following information: liquid density dimethyl sulfoxide 1.1 mL 1.0 mL ethanolamine tetrahydrofuran 0.89 mL methyl acetate 0.93 mL diethylamine 0.71 mL Next, the chemist measures the volume of the unknown liquid as 1655. cm and the mass of the unknown liquid as 1.55 kg. Calculate the density of the liquid. Round 0g / mL your answer to 3 significant digits. O yes Given the data above, is it possible to identify the liquid? O no O dimethyl sulfoxide O ethanolamine O tetrahydrofuran O methyl acetate O diethylamine If it is possible to identify the…
Please answer both questions?
How should broken glass be disposed? O in the trash O in the disposal box O in the sink O in the lab drawer hp
In an effort to conserve water nationwide, the Energy Policy Act of 1992 placed limits on the maximum flow rate of many household water fixtures, including showerheads. If the laminar flow rate across a range of pressures for a typical low flow shower head is 2.60 gal per minute, how long will it take this type of shower head to deliver 41.6 gal of water? 0.3 hr 0.267 hr 0.2667 hr 0.27 hr none of these
Complete sentences