Chemistry Dr. Bob

Now, I'm going to post how to figure out the theoretical yield of carbon dioxide from 1.00g sodium bicarbonate...

The reaction of citric acid and sodium bicarbonate is written as
H3C6H5O7(aq) + 3 NaHCO3(aq) → Na3C6H5O7(aq) + 3 H2O(l) + 3 CO2(g)

Um.. I think it's the same mole ratio so would I just take the moles of NaHCO3 and divide by the moles of CO2? and then what? I found the moles of CO2 = 1/molar mass 44 = 0.227 so would it be 0.0119 NaHCO3/ 0.227 CO2 = 0.0524? but what is that? what is the 0.0524 number supposed to be?

Thanks Dr. Bob,

Jennie

Then it asks me to calculate percentage yield of plastic cup A.. My records for cup A is
mass of cup, water, and stirrer = 54.66 g
mass of sodium bicarbonate = 1.02g
mass of citric acid = 0.77 g
total mass (add 1,2,3) = 56.45g
mass of cup, solution, and stirrer after the reaction = 56.21
difference (mass of carbon dioxide)=0.24g

So the answer to the top question will give me my theoretical yield, and the actual yield is my calculations of my experiment and I know that % yield is AY/TY... However, How do I start my calculations?? I need a nudge!! and I'm on my way! thanks, Dr. Bob!!

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  1. I answered below at the first post and I don't agree with your calculations. You never had 1g CO2 did you?

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