For example, hydrochloric acid (HCl) is a strong acid ... Figure 4. Carbonic acid and its conjugate base, bicarbonate ion. Because both the acid and base in a buffer solution are conjugates of each ...
An acid-base indicator is a substance that changes color as the pH ... 5 min) Show the students that the HCl solution in the Erlenmeyer is colorless. Add 10 mls of NaOH to the Erlenmeyer and point out ...
An acid-base indicator is a substance that changes color as the pH ... Add approximately 10 mL universal indicator and stir so that the water is visibly green. Then add 3-4 drops of 6M HCl and stir ...
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