Question

Watch the animation and observe the titration process of a standard 0.100 M sodium hydroxide solution with 50.0 \rm ml of a 0.100 M hydrochloric acid solution. Identify which of the following statements regarding acid-base titration are correct.
Check all that apply.

The titration process is based on a chemical reaction.
The \rm pH of the solution at the equivalence point is 7.
At the endpoint, the \rm pH of solution is 10 and the color of solution is pink.
At the beginning of the titration process, the \rm pH of the solution increases rapidly.
The chemical reaction involved in an acid-base titration is a neutralization reaction.
Before any base is added to the solution, the \rm pH of the solution is high.
In a titration process, the endpoint is reached before the equivalence point.
The \rm pH of the solution changes very slowly at the equivalence point.

b.)100 \rm mL of 1.00 M~\rm HCl solution is titrated with 1.00 M~ \rm NaOH solution. You added the following quantities of 1.00 M ~\rm NaOH to the reaction flask. Classify the following conditions based on whether they are before the equivalence point, at the equivalence point, or after the equivalence point/endpoint.

Answer 1

Answer:

Answers are in the explanation

Explanation:

a. The statments are:

The titration process is based on a chemical reaction.  TRUE. A titration is the chemical reaction between an acid and a base.

The pH of the solution at the equivalence point is 7.  TRUE. In a titration of strong acid with strong base the equivalence point is 7

At the endpoint, the pH of solution is 10 and the color of solution is pink.  FALSE. The endpoint in a strong acid - strong base titrationmust be near to equivalence point at pH = 7.

At the beginning of the titration process, the pH of the solution increases rapidly.  FALSE. At beginning of a titration, the pH of the solution increases slowly.

The chemical reaction involved in an acid-base titration is a neutralization reaction.  TRUE. In the reaction, you are neutralizing an acid (HCl) with a base (NaOH)

Before any base is added to the solution, the pH of the solution is high. FALSE. The addition of a base increases pH that is, in the beginning, low.

In a titration process, the endpoint is reached before the equivalence point.  FALSE. In a titration process, the endpoint is reached in the equivalence point

The pH of the solution changes very slowly at the equivalence point. FALSE. At the equivalence point, the pH changes rapidly.

b. For the reaction

NaOH + HCl → H₂O + NaCl

As the reaction is 1:1 and molarity of both solutions are the same, additions < 100mL of NaOH will stay before the equivalence point, equivalence point will be in 100mL and additions > 100mL of NaOH will stay after the equivalence point.

The conditions are:

10.0mL of 1.00 M NaOH before the equivalence point

150 mL of 1.00 M NaOH after the equivalence point

5.00 mL of 1.00 M NaOH before the equivalence point

50.0 mL of 1.00 M NaOH  before the equivalence point

200 mL of 1.00 M NaOH after the equivalence point

I hope it helps!

Answer 2

Answer:

The following statements are correct based on conditions given.

The titration process is based on a chemical reaction.

The \rm pH of the solution at the equivalence point is 7.

The \rm pH of the solution changes very slowly at the equivalence point.