Answered: rand name of soft drink oncentration of…

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter15: Solutions

Section: Chapter Questions

Problem 62QAP

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Just needing help on part b please.

12. Use the dilution equation:
M₁V₁ = M₂V₂
to calculate the concentration of the phosphate ion in the solutions you used for the Beer's
law plot. For example, if a 2.00 mL sample (V₁) of 3.00 x 10-3 M (M₁) standard phosphate
solution is diluted to 100.00 mL (V2) in a volumetric flask, the concentration of the re-
sulting solution would be given by the following:
M₁V, (3.00×10-³M)(0.00200 L)
M₁ =
V₂
0.1000 L
= 6.00 × 10-5M *

Transcribed Image Text:Brand name of soft drink analyzed Concentration of undiluted standard phosphate solution, M Pepsi M 33x/0-3 M Solution Number %T Absorbance 1 15% 1.6 2 3% 1.5 3 1% 1. S 0.5% 1 31% 0.510 4 Soft drink (dilute) *Concentration from Beer's law plot. See Figure 2. Calculations * Phosphate Concentration, mol/L 6.00 x 10-5 9.00 x 10-5 1.20 x 10-5 1·50 × 10-5 1.50×10 2.3 x 10-5 Colo 3107 a. Show your setup for the calculation of the concentration of the phosphate ion in Solution 1. M₂ = M, V₁ V₂ (3.00 x 10-3 M) (0.002002) 0.1000 L 1 = 6.00×105 b. Show your calculation for the concentration of phosphoric acid in the original (undiluted) soft drink. Hint: Use the formula M₁V₁ = M₂V₂ to solve for M₁. 2 Concentration of phosphoric acid in original (undiluted) soft drink, M

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