The interval shown here represents a
0 1 2 3 4 5 6 7 8
рн
9
10
11
12
13
14
PH Scale
weak acid
strong acid
weak base
strong base

Which of the following reactions represents an exothermic reaction? nh3(g) + 12.0 kcal ½n2(g) + 3/2 h2(g) ch4 + 2o2 co2 + 2h2o + 212,800 cal c + 2s cs2, h = 27,550 cal c(graphite) c(diamond), h = 0.45 kcal 2h2o 2h2 + o2, h = +58 kcal