Problem: A mass of 0.4113 g of an unknown monoprotic acid, HA, is titrated with NaOH. If the acid reacts with 25.0 mL of 0.1184 M NaOH(aq), what is the molar mass of the acid?a. 2.97 ´ 10–3 g/molb. 9.13 g/molc. 139 g/mold. 337 g/mole. 821 g/mol 

FREE Expert Solution

We are asked to identify the molar mass of the acid (HA). 

We go through the following steps to identify the molar mass. 

Step 1. Identify reaction

Step 2. Calculate moles NaOH

Step 3. Calculate mole HA

Step 4. Calculate molar mass


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Problem Details

A mass of 0.4113 g of an unknown monoprotic acid, HA, is titrated with NaOH. If the acid reacts with 25.0 mL of 0.1184 M NaOH(aq), what is the molar mass of the acid?

a. 2.97 ´ 10–3 g/mol

b. 9.13 g/mol

c. 139 g/mol

d. 337 g/mol

e. 821 g/mol

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