Tag: sodium hydroxide

Enthalpy – Thermometric titration

Enthalpy – Thermometric titration

Thermometric titration is a powerful technique used to determine the concentration of acids and bases by measuring the temperature change during a chemical reaction. In this article, we explore the process of thermometric titration and how it is used to calculate the enthalpy change of neutralization for hydrochloric acid and ethanoic acid using a standard solution of sodium hydroxide. We outline the required materials, the titration procedure, and the calculation process involved. Additionally, we answer common questions about the enthalpy change of neutralization, the experimental results for hydrochloric acid, and the heats of neutralization for weak acids and bases.

Titration Acid-Base (Simple)

Titration Acid-Base (Simple)

Titration is a fundamental laboratory technique used to determine the concentration of a substance in a solution. In this article, we will walk you through the steps of performing a simple acid-base titration using sodium hydroxide and hydrochloric acid. We will also discuss important safety precautions to keep in mind, such as wearing appropriate protective gear, handling chemicals with care, and disposing of waste properly. Additionally, we will address environmental concerns related to titration, including the safe disposal of chemical waste and glassware. By following these guidelines, you can perform a titration safely and responsibly while protecting yourself and the environment.

Titration Acid-Base

Titration Acid-Base

In this experiment, we aim to determine the concentration of a solution of sodium hydroxide by titration against a standard solution of potassium hydrogen phthalate. We will use phenolphthalein as an indicator to show when the reaction is complete. To perform the titration, we will need a burette, pipette, conical flask, sodium hydroxide solution, and potassium hydrogen phthalate solution, among other requirements. We will also need to ensure accuracy by recording burette readings to the nearest 0.05 cm3 and repeating titrations until they agree within 0.10 cm3. Finally, we will analyze the effects of various errors on the calculated value of the concentration of sodium hydroxide and discuss the reasons for using a colourless to pink solution for titration.

Investigation of Neutralizing Hydrochloric Acid with Sodium Hydroxide and Separating a Soluble Salt

Investigation of Neutralizing Hydrochloric Acid with Sodium Hydroxide and Separating a Soluble Salt

By using activated charcoal to remove the indicator, this modified experiment demonstrates the neutralization of hydrochloric acid with sodium hydroxide and the separation of a soluble salt. The procedure can be used to investigate the stoichiometry of acid-base reactions and to determine the yield of a reaction.