Hydrazine, N2H4, reacts with dinitrogen tetroxide, N2O4: 2 N2H4 (l) + N2O4 (g) → 4 H2O (l) + 3 N2 (g)

When 0.10 mol of hydrazone reacts with 0.10 mole of dinitrogen tetroxide, which of the following quantities would be consumed or produced?

Select one:

(I)+3 N2(g) that is correct

Explanation:

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol