Question

How would the calculated concentration of the HCl be affected if the sodium hydroxide were poured from a beaker that contained some water before the NaOH were added to it?

a) The concentration of HCl would increase.
b) The concentration of HCl would decrease.
c) The concentration of HCl would remain the same.
d) The effect on the concentration cannot be determined with the information provided.

Answer 1

The concentration of HCl would decrease.

Step-by-step explanation:

When sodium hydroxide is poured from a beaker that contains water before it is added to hydrochloric acid (HCl), it will dilute the concentration of the HCl. This is because the water added from the beaker will increase the volume of the solution, while the amount of HCl remains the same. Therefore, the concentration of HCl will decrease.