Aluminum granules are a component of some drain cleaners because they react with sodium hydroxide to release both energy and gas bubbles to help clear the drain clog. The reaction is:
NaOH + Al + 6H2O  2NaAl(OH)4 + 3H2
What mass of aluminum would be needed to produce 4L of hydrogen gas at 101kPa and 25C?

Question

Aluminum granules are a component of some drain cleaners because they react with sodium hydroxide to release both energy and gas bubbles to help clear the drain clog. The reaction is:
NaOH   +   Al    +    6H2O       2NaAl(OH)4    +   3H2
What mass of aluminum would be needed to produce 4L of hydrogen gas at 101kPa and 25C?

anonymous · Answer

What coefficients balance the reaction?
2,1,6,2,3
1,1,6,2,3
2,2,6,2,3
3,1,6,2,3
I got C.

anonymous · Answer

correct

anonymous · Answer

What temperature(K) is used in solving the PVnRT equation?
273 C
25 K
208 K
298 K
I didnt get an for this one.

anonymous · Answer

it shows you 25c so 25 Celsius is equal to 298.15 kelvin

anonymous · Answer

Okay Thanks!

How many moles of Hydrogen are created?
16.5 mol H2
1.9 mol H2
6.25 mol H2
0.16 mol H2
I chose D

anonymous · Answer

agree

anonymous · Answer

One more question.

anonymous · Answer

What value of R is used when solving the PVnRT equation?
0.0821 L * atm /  mol *K
8.314 L *atm / mol *K
8.314 L * kPa / mol *K
R is not needed for this problem

i didnt have an answer for this one either.