An environmental chemist is investigating a sample of acid rain. To determine the concentration of sulfuric acid in the sample, the chemist performs a titration against a standard solution of potassium hydroxide, KOH\text{KOH}KOH.
The chemist uses a volumetric pipette to transfer a portion of the potassium hydroxide solution into a conical flask before adding an indicator and titrating with the acid rain sample.
Describe how the chemist should use the volumetric pipette to measure and transfer exactly 25.00 cm3 of the potassium hydroxide solution into the conical flask.
276 exam-style questions on Edexcel GCSE Chemistry 4.1 Acids, covering 4.1.1 Acids, alkalis and the pH scale, 4.1.2 Hydrogen ion concentration and pH, 4.1.3 Dilute and concentrated, weak and strong acids, 4.1.4 Bases, alkalis and the reactions of acids, 4.1.5 Chemical tests for hydrogen and carbon dioxide, 4.1.6 Neutralisation as a reaction of acids with bases, 4.1.7 Preparing soluble salts, and 4.1.8 Solubility rules and preparing insoluble salts. Each one has a worked solution and a mark scheme showing where the marks go.