Question

5 + 6 HNO3 --> H2504 + 6 NO2 + 2H20 In the above equation how many moles of water can be made when 120.9 grams of HNO3 are consumed?

Answer 1

we need to first balance the chemical equation:

5HNO3 + 6HNO3 --> 5H2SO4 + 6NO2 + 2H2O

Next, we need to determine the number of moles of HNO3 consumed:

120.9 g HNO3 / (1 mole HNO3 / 63.01 g HNO3) = 1.92 moles HNO3

Since the reaction ratio between HNO3 and H2O is 1:2, this means that 2 moles of H2O are produced for every 1 mole of HNO3 consumed. Therefore, the number of moles of H2O that can be made is:

1.92 moles HNO3 * 2 moles H2O / 1 mole HNO3 = 3.84 moles H2O

So, when 120.9 grams of HNO3 are consumed, 3.84 moles of water can be made.