Problem: What is the pH of a solution made by mixing 40.0 mL of 0.100 M HCl with 25.00 mL of 0.100 M KOH? Assume that the volumes of the solutions are additive.A) 0.64B) 1.64C) 12.36D) 13.36E) 10.00

FREE Expert Solution
89% (203 ratings)
FREE Expert Solution

We’re being asked to determine the pH of a solution when 40.0 mL of 0.100 M HCl is mixed with 25.00 mL of 0.100 M KOH


Let’s first write the balanced reaction between HCl and KOH:

▪ HCl → strong binary acid
▪ KOH → (OH- with Group 1A ion) → strong base
▪ the reaction between a strong base and strong acid → no need to create an ICE chart

Balanced reaction:              HCl(aq) + KOH(aq) → H2O(l) + KCl(aq)



Now let’s find the concentration of reactant remaining after the reaction:

89% (203 ratings)
Problem Details

What is the pH of a solution made by mixing 40.0 mL of 0.100 M HCl with 25.00 mL of 0.100 M KOH? Assume that the volumes of the solutions are additive.

A) 0.64

B) 1.64

C) 12.36

D) 13.36

E) 10.00

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Strong Acid Strong Base Titrations concept. You can view video lessons to learn Strong Acid Strong Base Titrations Or if you need more Strong Acid Strong Base Titrations practice, you can also practice Strong Acid Strong Base Titrations practice problems .

What is the difficulty of this problem?

Our tutors rated the difficulty of What is the pH of a solution made by mixing 40.0 mL of 0.100... as medium difficulty.

How long does this problem take to solve?

Our expert Chemistry tutor, Jules took 4 minutes to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Davis' class at McMaster University.