Conclusions 1. In the Handout introduction, you will find the balanced chemical equation for what happened when
the waving lotion (ammonium thioglycolate) was applied to the hair in Treatment #2. Below is the
unfinished equation for what happened when the neutralizer lotion (hydrogen peroxide) was applied.
Fill in the boxes to finish the equation. Hint: H2O2 gains hydrogen atoms to make two of the same
molecule. (2 marks)
E
oxidation (loss of H)
protein
b.
HS
+
HS
:
b.
protein
two cysteine
amino acids
hydrogen peroxide
(oxidizing agent)
reduction (gain of H)

gold is my favorite solid.

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