...= 10.5 . What is Ka of thymolphthalein? | Homework.Study.com
thymol blue, color change at pH 1-3 3. bromothymol blue, color change at pH 6-8 4. methyl red, color change The pH of a 0.250 M cyanuric acid solution is 3.690. What is the value of Ka? HC_3H_5O_2 has a K_a = 1.3 times 10...