Sodium carbonate reacts with acetic acid to form sodium acetate (NaCH3COO), carbon dioxide (CO2), and water (H2O). A chemist carries out this reaction in a bomb calorimeter. The
reaction causes the
mass of 1.500
temperature of a bomb calorimeter to decrease by 0.985 K. The calorimeter has
kg and a specific heat of 2.52 J/g-K. What is the heat of reaction for this system?

a c d and f

just finished the assignment

answer: mercury

explanation:

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