Question

What is the molar mass of the acid if a titration of 4.92 g of

an acid requires 48.41mL of 0.250M NaOH to reach the equivalence
point?

Answer 1

To calculate the molar mass of the acid in a titration, you need to find the number of moles of the acid and use this information to calculate the molar mass using the given mass.

Step-by-step explanation:

To calculate the molar mass of the acid, we need to use the equation:
Mass (g) = Number of moles x Molar mass (g/mol)
First, we need to find the number of moles of the acid by using the given volume and concentration of NaOH used in the titration.
moles of acid = volume of NaOH (L) x concentration of NaOH (M)
Next, we can calculate the molar mass of the acid by rearranging the equation:
Molar mass (g/mol) = Mass (g) / Number of moles
Plug in the given mass and calculate the molar mass of the acid.

Answer 2

To calculate the molar mass of the acid, we first found the moles of NaOH used in titration (0.0121025 mol), and assuming a 1:1 reaction, also the moles of the acid. We then divided the mass of the acid (4.92 g) by its moles to get the molar mass, which is 406.52 g/mol.

Step-by-step explanation:

To determine the molar mass of the acid, we must first calculate the number of moles of NaOH used in the titration. Then we use the stoichiometry of the reaction to find the number of moles of the acid, and finally, we can calculate its molar mass.

First, calculate the number of moles of NaOH:

Number of moles = Volume (L) × Molarity (M) = 0.04841 L × 0.250 M = 0.0121025 mol NaOH

Assuming the reaction between the acid and NaOH is 1:1, the number of moles of acid will also be 0.0121025 mol.

Using the mass of the acid and the number of moles, we calculate the molar mass:

Molar mass of the acid = Mass (g) / Number of moles = 4.92 g / 0.0121025 mol = 406.52 g/mol

Therefore, the molar mass of the acid in question is 406.52 g/mol.