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In a mixture of silver, barium, and iron ions, the silver is removed by adding H

ID: 990402 • Letter: I

Question

In a mixture of silver, barium, and iron ions, the silver is removed by adding HCl and precipitating it as AgCl. What is used to separate barium from iron?

NH3, which precipitates the barium as Ba(OH)2 and leaves iron in solution.

NH3, which precipitates the iron as Fe(OH)3 and leaves barium in solution.

HNO3, which precipitates iron as Fe(NO3)3 and leaves barium in solution.

H2SO4, which precipitates the iron as Fe2(SO4)3 and leaves the barium in solution.

NH3, which precipitates the barium as Ba(OH)2 and leaves iron in solution.

Explanation / Answer

In a mixture of silver, barium, and iron ions, the silver is removed by adding HCl and precipitating it as AgCl. What is used to separate barium from iron:

A) NH3, which precipitates the iron as Fe(OH)3 and leaves barium in solution.

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