Question

Consider the following balanced equation: 2N2H4(g)+N2O4(g)→3N2(g)+4H2O(g) Complete the following table showing the appropriate number of moles of reactants and products. If the number of moles of a reactant is provided, fill in the required amount of the other reactant, as well as the moles of each product formed. If the number of moles of a product is provided, fill in the required amount of each reactant to make that amount of product, as well as the amount of the other product that is made. Mol N2H4 Mol N2O4 Mol N2 Mol H2O
4 ____ _____ _____
____ 7 _____ _____

_____ _____ _____18

____4.8 _____ ____

____ ____ 10.9 _____

Complete the first row.

Express your answers using one significant figure separated by commas.

1)Mol N2O4, Mol N2, Mol H2O =

2)Mol N2H4, Mol N2, Mol H2O =
3)Mol N2H4, Mol N2O4, Mol N2=
4)Mol N2O4, Mol N2, Mol H2O=
5)Mol N2H4, Mol N2, Mol H2O =
6)Mol N2H4, Mol N2O4, Mol H2O=

Answer 1

Solution :-

Using the mole ratio of the reactant and product we can calculate the moles for the each species as follows

Balanced reaction equation

2N2H4(g)+N2O4(g)→3N2(g)+4H2O(g)

Row 1 =Given 4 moles of N2H4

(4 mol N2H4 * 1 mol N2O4/2molN2H4) = 2 mol N2O4

(4 mol N2H4 *3 mol N2/2molN2H4) =6 mol N2

(4 mol N2H4 * 4 mol H2O/2molN2H4) = 8 mol H2O

Row2 = given 7 moles of N2O4

(7 moles of N2O4*2mol N2H4 /1 mol N2O4)= 14 mol N2H4

(7 moles of N2O4*3mol N2 /1 mol N2O4)=21 mol N2

(7 moles of N2O4*4 mol H2O /1 mol N2O4) = 28 mol H2O

Row 3 = Given 18 moles of H2O

(18 mol H2O * 2 mol N2H4/4 mol H2O) = 9 mol N2H4

(18 mol H2O * 1mol N2O4/4 mol H2O) =4.5 mol N2O4

(18 mol H2O * 3 mol N2/4 mol H2O)= 13.5 mol N2

Row 4 = given 4.8 mol N2O4

(4.8 moles of N2O4*2mol N2H4 /1 mol N2O4)= 9.6 mol N2H4

(4.8 moles of N2O4*3mol N2 /1 mol N2O4)=14.4 mol N2

(4.8 moles of N2O4*4 mol H2O /1 mol N2O4) = 19.2 mol H2O

Row 5 = given 10.9 mol N2

(10.9 mol N2 *2 mol N2H4/3 mol N2) = 7.27 mol N2H4

(10.9 mol N2 *1 mol N2O4/3 mol N2) = 3.63 mol N2O4

(10.9 mol N2 *4 mol H2O/3 mol N2) = 14.53 mol H2O

Mol N2H4	Mol N2O4	Mol N2	Mol H2O
4	2	6	8
14	7	21	28
9	4.5	13.5	18
9.6	4.8	14.4	19.2
7.27	3.63	10.9	14.53