Dentify the compound in the following pair that reacts at the faster rate in an SN1 reaction. Select the single best answer.

Cyclopentyl iodide or 1−Methylcyclopentyl iodide
Cyclopentyl iodide reacts at the faster rate.
1−Methylcyclopentyl iodide reacts at the faster rate.

h let me think

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