Question

what is the indicator that we will use in our titration lab?
a) khc₈h₄o₄
b) phenolphthalein
c) naoh
d) khp

Explanation:

Phenolphthalein is a common indicator used in acid - base titrations. It changes color at a certain pH range. The other substances listed are not indicators. KHC₈H₄O₄ (KHP) is a primary standard, NaOH is a common titrant, and KHP is the same as KHC₈H₄O₄.

Answer:

B. phenolphthalein