**SHOW WORK**

1.Based on the following equation, how many moles of hydrochloric acid are
needed to react with 0.64 moles of potassium permanganate?
2KMnO 4 + 8 HCl → 3 Cl 2 + 2 MnO 2 + 4 H 2 O + 2KCl

**SHOW WORK**

thats a little if u want the answer just look it up on google thats what i do haha : )

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