XCl YCl2 mixture 8.900 g water 150.0 g –4.42℃ AgNO3 27.575 g

XCl YCl2 mixture 8.900 g water 150.0 g –4.42℃ AgNO3 27.575 g

 

 

When 8.900 g of a mixture of an alkali metal chloride (XCl)

and an alkaline earth chloride (YCl2)

was dissolved in 150.0 g of water,

the freezing point of the resultant solution was –4.42℃.

Addition of an excess of aqueous AgNO3 to the solution

yielded a white precipitate with a mass of 27.575 g

(This white precipitate would be AgCl).

How much of each metal chloride was present in the original mixture,

and what are the identities of the two metals, X and Y?

 

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XCl YCl2 mixture 8.900 g water 150.0 g –4.42℃ AgNO3 27.575 g.hwp

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