4. Phosphate is precipitated from its solution with ammonium molybdate, as (NH4)a[PMO12O40 XH20]. Since the precipitate does not have a constant composition with regard to water content, it is dissolved in ammonia and the molybdate is precipitated with Pb(NO3)2, as PbMoOs. (a) What is the value of the gravimetric factor for the calculation of %P? (b) If the final precipitate weighs 0.100 g, what is the weight of P in the initial sample?

4. Phosphate is precipitated from its solution with ammonium molybdate, as (NH4)a[PMO12O40 XH20]. Since the precipitate does not have a constant composition with regard to water content, it is dissolved in ammonia and the molybdate is precipitated with Pb(NO3)2, as PbMoOs. (a) What is the value of the gravimetric factor for the calculation of %P? (b) If the final precipitate weighs 0.100 g, what is the weight of P in the initial sample?

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...

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