You perform an alkalinity test on a water sample with an initial pH of 8.1. It requires 8.5 meg of acid per L of sample to complete the test (i.e. to reduce the pH to 4.5). Sketch a distribution diagram (alpha diagram) and identify the dominant carbonate-containing compound in the original water sample and (H2CO3, HCO3, or CO32-) Calculate the molarity of the dominant form you just identified in units of mmol/L and enter your answer rounded to one decimal place. You Answered 0 Correct Answer 830.3 margin of error +/- 1