Which pH corresponds to the equivalence point for the graph below?
14
pH
12
10
8
6
4
2
0
100
0 20 40 60 80
Volume of Base Added (mL)

The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate

This statement about matter and its behavior is best classified as a