2. The reaction of strontium chloride and cesium phosphate begins with 8.62 moles of strontium chloride and 4.64 moles of cesium phosphate. How many moles of
cesium chloride are produced in the reaction?
a. Determine the limiting reactant
3 Srcl, + 2 Cs, PO. 6 CsCI + Sr,(PO.)2

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

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