You perform an alkalinity test on a water sample with an initial pH of 7.2 It requires 6.8 meq of acid per L of sample to complete the test (i.e. to reduce the pH to 4.5 ) a. What was the alkalinity in mg/L as CaCO3 ? b. How many liters of 1M sulfuric acid (H2SO4, strong) would you have to mix into 1L of the water sample to lower the pH4.5 ? c. Identify the dominant carbonate-containing compound in the original water sample and after the titration. d. Calculate CT in mole/ L and the bicarbonate concentration in the original sample in mg/L