# Calculate the mass of acid to obtain 40 g of methyl formate?

September 15, 2021 | education

| To solve, we compose the equation:

X g -? m = 40 g.

1. НСООН + СН3ОН = НСОО – СН3 + Н2О – esterification, methyl formate was obtained;

2. Calculation:

M (HCOOH) = 46 g / mol;

M (methyl formate) = 60 g / mol.

3. Determine the amount of the product:

Y (methyl formate) = m / M = 40/60 = 0.66 mol;

Y (HCOOH) = 0.66 mol since the amount of substances is equal to 1 mol according to the equation.

4. Find the mass of the original substance:

m (HCOOH) = Y * M = 0.66 * 46 = 30.36 g.

Answer: the mass of formic acid is 30.36 g.

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