S + 6 HNO3 → H2SO4 + 6 NO2 + 2 H2O

Question

S   +   6 HNO₃ →  H₂SO₄  +  6 NO₂  +   2 H₂O

In the above equation, how many grams of water can be made when 13.6 moles of HNO₃ are consumed?

Round your answer to the nearest tenth. If you answer is a whole number like 4, report the answer as 4.0

Use the following molar masses. If you do not use these masses, the computer will mark your answer incorrect.:

Element	Molar Mass
Hydrogen	1
Nitrogen	14
Sulfur	32
Oxygen	16

Answer 1

You have 13.6 mol HNO₃

To get from HNO₃ to H₂O, you have to do a mole to mole conversion and then use the molar mass to get grams

13.6 mol HNO₃ x (2 mol H₂O/6 mol HNO₃) x (18 g H₂O/1 mol H₂O) = 81.6 g H₂O

Answer 2

S  +  6HNO₃ ==>  H₂SO₄  +  6NO₂  +   2H₂O ... balanced equation

From the balanced equation, we see that SIX MOLES of HNO₃ produces TWO MOLES of H₂O.

To find out how many GRAMS of H₂O are formed from 13.6 MOLES of HNO₃, we must first find the MOLES of H₂O formed, and then convert that to GRAMS.

Using the values in the table provided, we can find the molar mass of H₂O:

2H = 2 x 1 = 2 g

1O = 1 x 16 = 16 g

Total = 18 g = molar mass of H₂O

Now we use dimensional analysis and the balanced equation to find the GRAMS of water produced from 13.6 moles of HNO₃:

13.6 mols HNO₃ x 2 mols H₂O / 6 mols HNO₃ x 18 g H₂O / mol H₂O = 81.6 g H₂O