Phenolphthalein would not be an appropriate indicator to use to determine the ka1 of phosphoric acid why not? what indicator would be appropriate?

Phenolphthalein is a chemical compound and plays the role of a acid-base indicator. When used as an indicator with a solution with pH, phenolphthalein is colourless below pH 8.5 and attains a pink to deep red hue above pH 9.0.

Using Phenolphthalein with phosphoric acid of pH ~3 will yield a colourless solution. Orange IV however seems fit as it would be a better indicator because it changes color around a pH of 2-3.

Explanation:

answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.