Chemical Titration Analysis: Hydrochloric Acid Solution Concentration Calculation
What is the concentration of the original hydrochloric acid solution?
From the given data:
- Volume of hydrochloric acid solution (HCl): 20.06 mL
- Volume of sodium hydroxide (NaOH) used for neutralization: 25.00 mL
- Concentration of sodium hydroxide (NaOH): 0.149 M
Answer:
The concentration of the original hydrochloric acid solution is 0.1856 M.
Final answer:
The original hydrochloric acid (HCl) solution concentration is calculated using the molarity equation M1V1=M2V2 from the given titration analysis data between HCl and sodium hydroxide (NaOH). Upon solving, we find that the concentration of the HCl solution is approximately 0.186 M.
Explanation:
The subject of this question is a chemical titration analysis between hydrochloric acid (HCl) and sodium hydroxide (NaOH) - a classic reaction representing acid-base neutralization. The titration reaction formula is HCl(aq) + NaOH(aq) → H2O(l) + NaCl(aq), indicating equal molar amounts of HCl and NaOH react to achieve neutralization.
To find the concentration of the original hydrochloric acid solution you can use the molarity equation; M1V1=M2V2, where M is molarity and V is volume. Given that V1, the volume of the HCl solution, is 20.06 mL, and M2, the molarity of the NaOH solution, is 0.149 M, and V2, the volume of the NaOH solution, is 25.00 mL. Plug these values into the equation and solve for M1 (M1 = (M2·V2) / (V1))
From the calculation, M1 equals to 0.186 M. Therefore, the concentration of the original hydrochloric acid solution is approximately 0.186 M.