Select an appropriate solvent to dissolve acetic acid (which is polar and contains an OHOH group). Check all that apply. Check all that apply. water (H2O)(H2O) acetone (CH3COCH3)(CH3COCH3) methanol (CH3OH)(CH3OH) ethanol (CH3CH2OH)(CH3CH2OH) hexane (C6H14)(C6H14) toluene (C7H8)(C7H8) carbon tetrachloride (CCl4)(CCl4)

the correct answer would be d. hope this !

може ли да зареждате повече информация, моля

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