Consider the following reactions. (Note: (s) = solid, (l) = liquid, and (g) = gas.)
½H2(g) + ½I2(g) → HI(g), ΔH = +6.2 kcal/mole
21.0 kcal/mole + C(s) + 2S(s) → CS2(l)
The temperature of the surroundings will:
A: increase
B: decrease

Imagine that twenty i.u.’s of enzyme z were catalyzing the above reaction for one minute, under vmaxconditions, in a 3.00 ml assay volume. the assay is buffered with 20 mm phosphate buffer, ph 7.60. what will the ph be at the end of that one minute?