For the reaction N2(g) + 3H2(g) == 2NH3(g), what will happen if more nitrogen gas is added?

A. there will be a shift towards the products
B. there will be a shift towards the reactants
C. there will not be a shift in equilibrium
D. the value for Keg will change

h let me think

catya your not at all which answer i've seen you do this on another question!

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