AS-Level Chemistry Practice Questions - AS-Level Chemistry (AQA 7404 Edexcel 8CH0 OCR H032) Exam

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In time-of-flight (TOF) mass spectrometry, why are ions accelerated by an electric field before reaching the flight tube?

So that ions of the same charge gain the same kinetic energy, allowing m/z to be derived from flight time To ionise the sample by knocking off electrons To separate ions by colour as they pass through the field To slow heavier ions so they ionise more efficiently

Correct Answer:

So that ions of the same charge gain the same kinetic energy, allowing m/z to be derived from flight time

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