A mixture of CrCl_2 and inert material is analyzed to determine the Cr content. First the mixture...
Question:
A mixture of {eq}\displaystyle CrCl_2 {/eq} and inert material is analyzed to determine the Cr content. First the mixture is dissolved in water. Then all of the chloride ion is precipitated as AgCl by the addition of an excess of silver nitrate.
{eq}\displaystyle CrCl_2(aq) + 2AgNO_3(aq) \to 2AgCl(s) + Cr(NO_3)_2(aq) {/eq}
In one experiment, a 0.6670 g sample of the mixture resulted in 1.2905 g of AgCl. Determine the percent (by mass) of Cr in the mixture.
Chemical Species:
Precipitating a certain chemical species by adding a substance to the solution that contains that chemical species is called selective precipitation. It is a process used to take a certain chemical species out of the solution for a number of reasons. For instance, chemical species might be desired. Or the chemical species might be undesired, so it is taken out of the solution.
Answer and Explanation: 1
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View this answerFirst Step: Use the mass (m) and molar mass (MM) of silver chloride to calculate silver chloride's number of moles (n). The molar mass of silver...
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