1. 50.00 mL of an unknown monoprotic acid is titrated with 0.132 NaOH. It takes 25.25 mL of base to reach the equivalence point. Calculate the concentration of the acid.
Ma*Volumeacid=Molaritybase*Volumebase
Ma=.132*.0255/.050 Moles/liter
To calculate the concentration of the unknown acid, we can use the concept of stoichiometry. Here's how you can determine the concentration of the acid using the given data:
Step 1: Convert the volume of NaOH used to liters.
25.25 mL = 25.25 mL × (1 L / 1000 mL) = 0.02525 L
Step 2: Determine the number of moles of NaOH.
Moles of NaOH = Concentration of NaOH × Volume of NaOH
Assuming the concentration of NaOH is known, let's say it is C NaOH M.
Moles of NaOH = C NaOH × 0.02525 L
Step 3: Determine the number of moles of the acid.
According to the balanced chemical equation, the stoichiometry between NaOH and the unknown acid is 1:1. This means that the number of moles of NaOH equals the number of moles of the acid.
Therefore, Moles of acid = Moles of NaOH = C NaOH × 0.02525 L
Step 4: Determine the concentration of the acid.
The concentration of the acid is given in moles per liter (M). Since we know the volume of the acid is 50.00 mL = 0.050 L, we can calculate the concentration (C acid) using the following formula:
C acid = Moles of acid / Volume of acid in liters
= (C NaOH × 0.02525 L) / 0.050 L
By plugging in the values for C NaOH and performing the calculation, you can find the concentration of the acid.