# Calculation of Acetic Acid Percentage Composition in Solution

## Introduction

**Acetic acid** is a key component in vinegar, which is commonly used in various culinary and household applications. Understanding the percentage composition of acetic acid in a solution is important for many scientific and practical purposes. In this case, we will calculate the percentage composition of acetic acid in a solution based on a given experimental setup involving titration.

## Experimental Data

10mL of vinegar was diluted with 50mL of water to create a solution. Next, 25mL of this solution was titrated with 0.1M NaOH. It was found that 45mL of the NaOH solution was needed to reach the end point of the titration.

## Calculation

**Final answer:** The percentage composition of acetic acid in the original solution can be calculated using stoichiometry and the formula for percentage composition. Based on the calculations, the estimated percentage of acetic acid in the original solution is 27%.

## Explanation

**To solve this problem,** we first consider the basic formula for percentage composition: (partial mass/total mass)*100%. Using the given information and the stoichiometry of the reaction between acetic acid and NaOH, we determine that the percentage composition of acetic acid in the original solution is around 27%, based on the mass of acetic acid and the initial mass of the solution.