Experiment 2: Calculate the molar HCI concentration using your fine results
To calculate the molar HCl concentration using your experimental results, you will need the following information:
1. Volume of HCl solution used: This should be measured in milliliters (ml) or liters (L).
2. Volume of NaOH solution used: This should also be measured in ml or L.
3. Molarity of NaOH solution: This is usually given in moles per liter (M).
4. Stoichiometry of the reaction: The balanced chemical equation of the reaction between HCl and NaOH should be known. It is usually 1 mole of HCl reacts with 1 mole of NaOH to form 1 mole of water (H2O) and 1 mole of NaCl.
Based on this information, you can use the following formula to calculate the molar HCl concentration:
Molar HCl concentration (M) = (Molarity of NaOH) x (Volume of NaOH solution used) / (Volume of HCl solution used)
Example calculation:
Let's assume you used 50 ml of NaOH solution with a molarity of 0.1 M to neutralize 25 ml of HCl solution. Using the formula above:
Molar HCl concentration (M) = (0.1 M) x (50 ml) / (25 ml)
= 0.2 M
Therefore, the molar HCl concentration in this example is 0.2 M.