Ask Question
14 March, 13:06

A piece of lithium metal is added to a beaker that contains water and phenolphthalein. Using what you know about the properties of bases, choose the best explanation for what you observe.

1) The phenolphthalein is turning pink because an acid is forming

2) The phenolphthalein is turning pink because a base is forming.

3) The phenolphthalein is turning pink because the reaction is at equilibrium.

+1
Answers (2)
  1. 14 March, 14:34
    0
    2) The phenolphthalein is turning pink because a base is forming.

    Explanation:

    Lithium metal reacts with water to form lithium hydroxide and hydrogen gas.

    Li + H₂O → LiOH + H₂

    LiOH is base. LiOH dissociates in water to release the hydroxyl ion OH⁻ which makes the pH greater than 7.0.

    Phenolphthalein is an acid base indicator. It is colorless in acidic solution and turns pink in basic solution.
  2. 14 March, 16:05
    0
    The answer is "The phenolphthalein is turning pink because a base is forming."
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “A piece of lithium metal is added to a beaker that contains water and phenolphthalein. Using what you know about the properties of bases, ...” in 📙 Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers