Identify the mechanism by which each of the reactions above proceeds from among the mechanisms listed. use the letters a - j for your answers. proton transfer e = electrophilic addition h = sn1 nucleophilic substitution b = lewis acid/base f = e1 elimination i = sn2 nucleophilic substitution c = radical chain substitution g = e2 elimination j = electrophilic aromatic substitution d = radical chain addition

solute : a solute is a substance that is dissolved in another substance is known as a solvent. it is mixed with a special mixture know as homogeneous mixture.

solvent: a solvent is a substance that dissolved a solute, which results in a solution is known as solvent.

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