a student performs a gravimetric analysis experiment and is given 1.94 g 1.94 g of a contaminated mixture containing anhydrous magnesium chloride and potassium nitrate. to determine the percentage by mass of magnesium chloride in the mixture, excess silver nitrate is added to the mixture to precipitate the chloride ion as silver chloride. the mass of the silver chloride precipitate is found to be 1.43 g 1.43 g. which of the following is the mass percent of magnesium chloride in this sample?
a.25%
b.24%
c. 47%
d. 74%

Question

06-12-2022
Chemistry

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a student performs a gravimetric analysis experiment and is given 1.94 g 1.94 g of a contaminated mixture containing anhydrous magnesium chloride and potassium nitrate. to determine the percentage by mass of magnesium chloride in the mixture, excess silver nitrate is added to the mixture to precipitate the chloride ion as silver chloride. the mass of the silver chloride precipitate is found to be 1.43 g 1.43 g. which of the following is the mass percent of magnesium chloride in this sample?
a.25%
b.24%
c. 47%
d. 74%

Sagot :

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Help please thank you ASAP

aashvi1 aashvi1 · Answer 1 · 2022-12-17T02:54:11-05:00

The only material that will precipitate is silver nitrate. Silver chloride will precipitate as a result of the reaction between magnesium chloride and silver nitrate. 1.94 g 1.94 g of a contaminated combination including anhydrous potassium magnesium chloride and magnesium chloride is supplied to the subject of a gravimetric analysis experiment.

What is anhydrous magnesium?

The student uses extra AgNO3(aq) to precipitate the chloride ion as AgCl to determine the mixture's proportion by mass of MgCl2 (s). To ascertain the sodium chloride content, a gravimetric study is conducted. The ratio of magnesium chloride to silver nitrate is 1:2, meaning that a mineral water should use a minimum of two moles of silver nitrate while precipitating the chloride ions as silver chloride. Using gravimetric analysis, a student wants to ascertain the percentage of mass.

To learn more about potassium nitrate from given link

brainly.com/question/15080595

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