In this activity, you will be observing a reaction where copper and silver nitrate react to form copper (II) nitrate and silver. What are the products of this reaction?

Copper(II) nitrate and silver

Explanation:

2AgNO₃(aq )  +  Cu  (s) -->  Cu(NO₃)₂(aq ) +  2Ag(s)

This can be called a redox reaction because silver nitrate is reduced and copper is oxidized.  This can also be called a single replacement reaction because copper replaces silver in the substance silver nitrate.

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