View the step-by-step solution to:

Question

Calculate the volumes of stock solutions.

Prepare standard solutions of 0, 0.2, 0.4, 0.6 and 1.0 ppm nitrite

by pipetting the appropriate amount of stock nitrite solution (ca. 20 ppm) into 100 mL volumetric flasks. Measure with a disposable plastic pipette and add to each flask 2 mL dilute HCl and 2 mL sulfanilic acid. Add 2 mL N-(1-naphthyl)ethylenediamine dihydrochloride solution and 2 mL 2 M sodium acetate. Dilute to the mark with distilled water. Mix well by stoppering the flasks and inverting several times. Let the standard solutions stand for 5 minutes.

Top Answer

Sign up to view the full answer

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

-

Educational Resources
  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question