Calculate ΔU, ΔH, ΔS, ΔG during the reversible evaporation 1 mol water at P = 0.5 atm and kept constant at 53 degrees C. Knowing that under that condition 1 mol of steam occupies 184 liters, heat Evaporation of 1 gram of liquid water is 567 cal

a corroding iron, if that's one of your choices

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