6. The potassium in the 3.0 ml plasma sample was determined by precipitating the potassium as potassium phosphotungstate, K;PW,2040. From the given amount of sample, 16.36 mg of precipitate was formed. In order to check the reliability of the determination, the analyst decided to run a reagent blank. A reagent blank is done with all the reagents and steps except for the presence of the sample. The reagent blank gave 0.12 mg of precipitate. Using the data given, calculate % K and ppm K in the plasma sample. (K = 39.10 g/mol; P = 30.97 g/mol; W = 183.84 g/mol; 0 = 16.00 g/mol)
6. The potassium in the 3.0 ml plasma sample was determined by precipitating the potassium as potassium phosphotungstate, K;PW,2040. From the given amount of sample, 16.36 mg of precipitate was formed. In order to check the reliability of the determination, the analyst decided to run a reagent blank. A reagent blank is done with all the reagents and steps except for the presence of the sample. The reagent blank gave 0.12 mg of precipitate. Using the data given, calculate % K and ppm K in the plasma sample. (K = 39.10 g/mol; P = 30.97 g/mol; W = 183.84 g/mol; 0 = 16.00 g/mol)
General Chemistry - Standalone book (MindTap Course List)
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Chapter12: Solutions
Section: Chapter Questions
Problem 12.31QP
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Transcribed Image Text:6. The potassium in the 3.0 ml plasma sample was determined by precipitating the potassium as potassium
phosphotungstate, K,PW12040- From the given amount of sample, 16.36 mg of precipitate was formed. In
order to check the reliability of the determination, the analyst decided to run a reagent blank. A reagent blank
is done with all the reagents and steps except for the presence of the sample. The reagent blank gave 0.12 mg
of precipitate. Using the data given, calculate % K and ppm K in the plasma sample. (K = 39.10 g/mol; P = 30.97
g/mol; W = 183.84 g/mol; O = 16.00 g/mol)
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