Suppose a250 ml flask is filled with 2.0 mol of O2 and 1.1 mol of NO . The following reaction becomes possible: The equilibrium constant K for this reaction is 0.523 at the temperature of the flask.
Calculate the equilibrium molarity of NO. Round your answer to two decimal places.

the answer is   c.) 1575 j.

explanation:

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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