10.0 g of an unknown acid is titrated to the equivalent point using 65.0 ml of 0.150M KCH. Assuming the acid is monoprotic ( like HCL or HF ) , what is the molecular mass of the acid? Is it possible to find the mols of the acid?

(Balanced equation & solution please!)

Is that a typo for KOH?

KOH + HA ==> KA + H2O
mols KOH = M x L = ?
Then mols KOH = mols HA since the coefficients are 1:1.
mols HA = grams/molar mass. You know mols and grams, solve for molar mass.

To find the molecular mass of the unknown acid, let's break down this problem step by step.

Step 1: Write the balanced equation for the reaction between the acid and the base. Assuming the acid is monoprotic, which means it donates only one proton, the equation could be written as follows:

Acid (HA) + Base (KOH) → Salt (KA) + Water (H2O)

However, you mentioned that the base used is potassium acetate (KCH3COO) rather than potassium hydroxide. Therefore, the balanced equation becomes:

Acid (HA) + Base (KCH3COO) → Salt (KCH3COO) + Water (H2O)

Step 2: Calculate the moles of potassium acetate used. To do this, we use the formula:

moles = concentration (mol/L) × volume (L)

Given that the concentration of KCH3COO is 0.150 M and the volume used is 65.0 mL (which can be converted to L by dividing by 1000), we can calculate the moles of KCH3COO:

moles of KCH3COO = 0.150 mol/L × 65.0 mL / 1000 mL/L

Step 3: Determine the moles of the unknown acid used. From the balanced equation, we can see that 1 mole of KCH3COO reacts with 1 mole of HA. Therefore, the moles of the unknown acid used is equal to the moles of KCH3COO used:

moles of HA = moles of KCH3COO

Step 4: Calculate the molecular mass of the unknown acid. The mass (m) of a substance is given by the formula:

mass (m) = moles (n) × molar mass (M)

Given that the mass of the unknown acid is 10.0 g and we know the moles of HA, we can rearrange the formula to solve for the molecular mass (M):

M = mass (m) / moles (n)

Plugging in the values:

Molecular mass (M) = 10.0 g / moles of HA

Note: In order to find the molar mass, we need to know the moles of the unknown acid. However, without additional information or given quantities such as pH or concentration, it is not possible to directly determine the molar values.

So, in conclusion, it is not possible to find the moles of the acid based on the information provided, thus making it impossible to find the molecular mass of the acid as well.