1972 Ap Chemistry: Free Response Answers !!better!!

(since we want ethanol as product, not reactant). [ 2CO2 + 3H2O → C2H5OH + 3O2 \quad ΔH = +1367 , \textkJ ]

K2CO3+2HCl→2KCl+CO2+H2Ocap K sub 2 cap C cap O sub 3 plus 2 cap H cap C l right arrow 2 cap K cap C l plus cap C cap O sub 2 plus cap H sub 2 cap O , 0.0100 mol of CO2cap C cap O sub 2 corresponds to 1.38 g of K2CO3cap K sub 2 cap C cap O sub 3 , resulting in . 1972 ap chemistry free response answers

1-bromo-1-chloroethane has a chiral center and exists as a pair of enantiomers. Ethene ( C2H4cap C sub 2 cap H sub 4 ): (since we want ethanol as product, not reactant)

One of the hallmark questions involved a complex mixture of potassium hydroxide, potassium carbonate, and potassium chloride. The answer required a multi-step titration analysis, where students had to account for gas evolution ( CO2cap C cap O sub 2 ) and excess HClcap H cap C l Ethene ( C2H4cap C sub 2 cap H