Homework Help: Chemistry 120

Posted by Macey on Wednesday, February 10, 2010 at 10:06am.

A sloution of calcium nitrate, C(NO3), reacts with a solution of ammonium fluoride, NH4F, to form solid calcium fluoride, CaF2, and ammonium nitrate, NH4NO3(ag). When 45.00 mL of 4.8724 x 10 -1M Ca(NO3)2 solution was added to 60.00 mL of 9.9981 x 10 -1M NH4F solution, 1.524g of CaF2 was isolated.

(1) Write the equation for the reaction, showing the staes of substances.

(2) Calculate the number of moles of Ca(NO3)2 orginally present.

(3) calculate the number of moles of NH4F present

(4) Identify the limiting reagent.

(5) Calculate the theoretical yeild, in grams, of CaF2.

(6) Calculate the percent yield of CaF2.

Chemistry 120 - dongo, Wednesday, February 10, 2010 at 10:23am
You will have to calculate the numbers of oxidations in order to prove this to be a REDOX-reaction... The rest is simple algebra.
Chemistry 120 - Macey, Wednesday, February 10, 2010 at 12:11pm
Yes it may be simple to you but it is not easy for me. Im not even sure where to begin! Please provide more in depth help!

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