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?

Answer 1

What coefficients balance the reaction?
a. 2,1,6,2,3
b. 1,1,6,2,3
c. 2,2,6,2,3
d. 3,1,6,2,3

What temperature(K) is used in solving the PVnRT equation?
a. 273C
b. 25K
c. 308K
d. 298K

How many moles of Hydrogen are created?
a. 16.5 mol H2
b. 1.9 mol H2
c. 6.25 mol H2
d. 0.16 mol H2

What mole ratio is used when solving the stoichiometry portion of the problem?
a. 2mol NaOH / 3mol H2
b. the mole ratio is not shown...
c. 3mol H2 / 2mol Al
d. 3mol H2 / 1mol Al

What value of R is used when solving the PVnRT equation?
a. 0.0821 L * atm / mol *K
b. 8.314 L *atm / mol *K
c. 8.314 L * kPa / mol *K
d. R is not needed for this problem

What is the answer to this problem?
a. 4.3 g Al
b. 0.05 mol Al
c. 2.9 g Al
d. 2.2 g Al

Answer 2

you are allowed only one question per post.. but more importantly, post your attempt at solving the question (regardless if it's right or not) and indicate what you are having trouble with first, if you require assistance.

Answer 3

here are the answers i got
1. c
2. d
3. d
4. a
5. d
6. d
i just want my home work checked.

Answer 4

show your work if you want your answers checked

Answer 5

idk eleese

Answer 6

Okay thanks anyway.