What is the pH of a solution obtained by dissolving two extra-strength aspirin tablets, containing 590 mg of acetylsalicylic acid each, in 240 mL of water?

2b2t

explanation:

2b2t

fe 55.85 g/mol and h2o 18.02 g/mol.

c) should be the answer.

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