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Examen

OCR A-level Chemistry - Paper 3 Questions & Answers Correct!!
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abril 2025

2024/2025

A
Why does HF have a higher boiling point than CH4? - ANSWERS-Boiling point increases as electronegativity increases -HF has hydrogen bonding, CH4 has London forces How do you prepare a standard solution? - ANSWERS-Weigh out correct mass of solid -Dissolve in distilled water -Transfer to a 250cm^3 volumetric flask -Wash beaker with distilled water -Add washings to the volumetric flask -Make up to 250cm^3 with distilled water -Invert to ensure mixing Why can we sometimes assume a reac...
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