Determine the type of chemical reaction, find the limiting reagent, determine the amount of product in grams, and the amount in grams of excess reagent.

8.75 g of mercury (II) nitrate solution is mixed with 9.83 g sodium iodide solution (ppt).

Hg(NO3)2(aq) + 2NaI(aq) --> HgI2(s) + 2NaNO3(aq)
Chemical reaction: double replacement

Molar mass Hg(NO3)2 = 325amu. 1moleHg(NO3)2 = 325gHg(NO3)2
(1moleHg(NO3)2 / 325gHg(NO3)2) 8.75gHg(NO3)2 = .0269molesHg(NO3)2

Molar mass NaI = 150amu. 1moleNaI = 150gNaI
(1moleNaI / 150gNaI) 9.83gNaI = .0655molesNaI

For every 1 mole Hg(NO3)2, there are 2 moles Hg(NO3)2

Limiting Reagent: Hg(NO3)2

Product = 475g

I am not sure if I am figuring out the number of moles or grams in this problem. Also, I am not quite sure how to determine the limiting reagent. Please check/correct my work so I can get a better understanding on how to do this. Thank you!

1 answer

you are ok (I didn't check math) until here:
For every 1 mole Hg(NO3)2, there are 2 moles Hg(NO3)2 ****That is nuts

Limiting Reagent: Hg(NO3)2***correct

Product = 475g****Nuts. You get .0269 moles of HgI2, that is the product. figure the mass of that.