How would I solve the following two problems?
1. Calculate the volume (in mL) of NO produced by the decomposition of 0.25 g of NaNO2. Assume 25 C and 1 atm.
2. Calculate the volume (at 25 C and 1 atm) of NO2 expected if all of the gas of the above problem reacts.
Here's what I've determined:
I wrote the chemical equation as: NaNO2 <--> Na + NO2
And now, I assume I use the ideal gas equation: PV=nRT, where V will be my volume of NO that I'm looking for. My question is, do I use the grams of NaNO2 into moles, and then substitute that value into the n of my equation?
These problems are in the Equilibrium/LeChatelier's Principle section, so I assume I have to do something else other than simply plugging numbers into the ideal gas equation.
And also, would #2 be done the exact same way as #1?
Thanks in advance,
Andrew
EDIT #1:
I just converted the 0.25 g NaNO2 into moles (3.62x10-3), and plugged all the numbers into the ideal gas equation, which gives me V=88.5 mL. I don't think the problem would be that simple, though, as that's simply the volume of the NaNO2, and not the volume of the NO as needed... hmm... what am I missing?
EDIT #2:
Is this just a basic titration, using the mole-to-mole ratio? And then plugging the values into the ideal gas equation?