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Chemistry 14 Online
OpenStudy (anonymous):

Molar conversion help please!

OpenStudy (anonymous):

The NaHCO3 is the limiting reactant and the HCl is the excess reactant in this experiment. Determine the theoretical yield of the NaCl product, showing all of your work in the space below. (5 points) So far I have 12.71 g NaHCO3 / 83.96 g per mole NaHCO3 = 0.151

OpenStudy (sweetburger):

Whats your question to be exact?

OpenStudy (anonymous):

What is the theoretical yield of NaCl with the mass of NaHCO3 being 12.71 g and HCl being in excess. NaHCO3 +HCl → NaCl + CO2+ H2O

OpenStudy (anonymous):

Some direction or correction would be helpful

OpenStudy (sweetburger):

Alright so you found the number of moles of NaHCO3. Im assuming your math is correct (it looks correct). So from here we can find the number of moles of NaCl produced. |dw:1440617996106:dw|

OpenStudy (anonymous):

.151 x 1 = .151, but could you mind checking my work of converting grams to moles? (like the process/formula)

OpenStudy (sweetburger):

sure

OpenStudy (anonymous):

thank you

OpenStudy (sweetburger):

your math is correct but if you want the correct number of significant digits it should be .1514

OpenStudy (anonymous):

Oh thank you, I appreciate it. So, we don't have to mess with HCl conversion because it's in excess, right? I only really have to convert .1514 mole NaCl to grams?

OpenStudy (sweetburger):

yea because HCl is in excess it would never be the limiting reagent this means that we are limited by the amount of NaHCO3 present and therefor whatever amount of NaHCO3 we have will directly affect the amount of products we will have when the reaction is completed

OpenStudy (sweetburger):

lemme know if you have any other questions

OpenStudy (anonymous):

It does. So all that's left is NaCl mole -> gram conversion to find it's theoretical yield?

OpenStudy (sweetburger):

yes if you need to find the mass of NaCl produced that would be the only thing left to do in this situation

OpenStudy (anonymous):

Ok thank you. I'll be back in like 30 seconds.

OpenStudy (sweetburger):

aight

OpenStudy (anonymous):

OK. I'm resubmitting this and I was checking to see if I made any of the same mistakes. Well, all looks in order, you've been a great help thanks.

OpenStudy (sweetburger):

Alright glad to help :).

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