4 points 19. What is the shape (molecular geometry) of this AsF5? What is the
VSEPR number of AsF5? *
Trigonal bipyramidal: 550
See Saw; 541
T Shape; 532
Trigonal Pyramidal; 431
Trigonal Planar; 330

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

i believe the answer is 5,000