Practice exam #3 test corrections

IR spectrum

C=O stretch(aldehyde) → 1700-1740 cm^-1

Aromatic C=O stretch → 1600-1680 cm^-1

C-O → 1000-1200 cm^-1

O-H(carboxylic acid) → 2500-3000 cm^-1

O-H(alcohol) → 3200—3600 cm^-1

N-H(nitriles) and alkynes → 2150-2250 cm^-1

velocity

the displacement divided by the time interval of motion; in other words velocity is the slope of displacement vs time

strong basic vs weak basic solution

strong basic solutions will be closer to 10 while weak basic solutions will be near 7. Example: a solution of pH 8.2 will be weakly basic

thermodynamics: spontaneous reactions at a given temp

DeltaG needs to be (-) for a reaction to be spontaneous(deltaG < 0). deltaH and deltaS can vary as long as deltaG is negative

Answer the question

The graph shows Energy conversion and oxygen consumption increasing, essentially are proportional- so A is correct answer