# Problem: ln an acid-base titration, a 20.0 mL HCI solution of unknown concentration requires 15.6 mL of a 0.250 M NaOH solution to reach the equivalence point. What is the concentration (M) of the unknown HCI solution? HCl(aq) + NaOH(aq) → H2O(l) + NaCl(aq)A. 12.1 MB. 72.6 MC. 320 MD. 0.195 M

###### FREE Expert Solution
91% (224 ratings)
###### Problem Details

ln an acid-base titration, a 20.0 mL HCI solution of unknown concentration requires 15.6 mL of a 0.250 M NaOH solution to reach the equivalence point. What is the concentration (M) of the unknown HCI solution?

HCl(aq) + NaOH(aq) → H2O(l) + NaCl(aq)

A. 12.1 M

B. 72.6 M

C. 320 M

D. 0.195 M

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 Solution Stoichiometry concept. You can view video lessons to learn Solution Stoichiometry. Or if you need more Solution Stoichiometry practice, you can also practice Solution Stoichiometry practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofln an acid-base titration, a 20.0 mL HCI solution of unknown...as low difficulty.

How long does this problem take to solve?

Our expert Chemistry tutor, Jules took 3 minutes and 4 seconds 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 Laude's class at TEXAS.