If 0.1 M NaOH is mixed with 0.1 M HCl, what will be the resulting pH?

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Question: If 0.1 M NaOH is mixed with 0.1 M HCl, what will be the resulting pH?

Options:

Correct Answer: 7

Solution:

The reaction between NaOH and HCl neutralizes each other, resulting in a neutral solution with a pH of 7.

If 0.1 M NaOH is mixed with 0.1 M HCl, what will be the resulting pH?

If 0.1 M NaOH is mixed with 0.1 M HCl, what will be the resulting pH?

Step 1: Understand that NaOH is a strong base and HCl is a strong acid.
Step 2: Recognize that when a strong acid and a strong base are mixed, they neutralize each other.
Step 3: Calculate the moles of NaOH and HCl in the solution. Since both are 0.1 M and mixed in equal volumes, they will completely neutralize each other.
Step 4: After the neutralization, there are no excess H+ or OH- ions left in the solution.
Step 5: Since the solution is neutral, the resulting pH will be 7.

Neutralization Reaction – The reaction between an acid (HCl) and a base (NaOH) that produces water and a salt, resulting in a neutral solution.
pH Scale – Understanding the pH scale where a pH of 7 indicates a neutral solution.
Concentration and Stoichiometry – Recognizing that equal concentrations of a strong acid and a strong base will neutralize each other.