If 21.3 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 297 Kelvin and 1.40 atmospheres? Show all of the work used to solve this problem.
2 Li (s) + 2 H2O (l) yields 2 LiOH (aq) + H2 (g)
Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga.
Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus.
Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
So your first step is to determine the moles of lithium to do this you take the mass (21.3g) divided by the molar mass of lithium
Not the answer you are looking for? Search for more explanations.
Yep so you get 3 moles of lithium reacting with excess water
So now we look at the stoichimometric coefficients. The ratio between lithium to hydrogen gas is 2:1. We found in the previous step that there are 3 moles of lithium so using the ratio we can relate to determine how many moles of hydrogen gas are produced. So how many moles of hydrogen gas are produced
3 moles lithium x 1H / 2Li = 1.52moles H. Correct?
Yes! So now you can put it into the ideal gas formula PV=nRT where P=1.4atm, n is the moles you solved for, R is the ideal gas constant and T is your temperature and solve for V your volume
R would be 0.082 thought I should mention that too
ok so the formula would be v = nrt/p. plugging that in would be 1.52moles x 0.082 x 297K / 1.4atm
then which would = 20.97 right?
wait I did something wrong i got 26.44
Ya I got 26.4 I was trying to figure out how you got that other number lol