Potassium hydroxide reacts with dilute sulfuric acid to form potassium sulfate and water.
potassium hydroxide+sulfuric acid→potassium sulfate+water \text{potassium hydroxide} + \text{sulfuric acid} \rightarrow \text{potassium sulfate} + \text{water} potassium hydroxide+sulfuric acid→potassium sulfate+waterA student carried out a titration to find the exact volume of dilute sulfuric acid that reacted with 25.0 cm3 of potassium hydroxide solution.
There were five steps in the titration, but they are not listed in the correct order.
Step V: Swirl the conical flask continuously while running the dilute sulfuric acid from the burette until the indicator undergoes a sharp colour change.
Step W: Use a volumetric pipette to measure exactly 25.0 cm3 of the potassium hydroxide solution.
Step X: Record the final volume reading on the burette and determine the total volume of sulfuric acid delivered.
Step Y: Fill a clean burette with the dilute sulfuric acid and note the starting meniscus level.
Step Z: Transfer the measured potassium hydroxide into a clean conical flask and add three drops of phenolphthalein indicator.
Write the steps in the correct order.
Some of the steps have been completed for you.
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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.