finding mass of a product

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D-nice1D
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Joined: Fri Sep 28, 2018 12:21 am

finding mass of a product

Postby D-nice1D » Sun Jun 30, 2019 5:17 pm

According to the following equation, 0.750 g of C6H9Cl3 is mixed with 1.000 kg of AgNO3 in a flask of water. A white solid, AgCl, completely precipitates out. What is the mass of AgCl produced?

C6H9Cl3 + 3AgNO3 ---> AgCl + C6H9(NO3)3.

Molar Mass: C6H9Cl3 (187.50 g/mol), 3AgNO3 (169.88 g/mol), AgCl (143.32 g/mol)
I don't understand how to find the mass of AgCl.Is it not given? Or do I multiply the amt of moles by the coefficient?

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Re: finding mass of a product

Postby Chem_Mod » Mon Jul 01, 2019 11:31 am

Firstly, you would balance the reaction. Then, you would want to find the number of moles of each reactant/product by dividing their given masses by their molar masses. Then using the limiting reagent concept, you will find out which of the two reactants is the limiting reagent and according to that, you will find out the number of moles of each of the products that will be produced. From this, you will get the number of moles of AgCl that will be produced and you can find the mass of AgCl produced.


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