AQA A Level Chemistry復習筆記8.1.7 Making Simple Cells
Making Simple Cells Simple cells can be used to investigate the effect of different electrode combinations on the EMF produced by an electrochemical cell Key steps in the procedure The metal...
AQA A Level Chemistry復習筆記8.1.6 Determination of Kc
Determination of Kc The determination of an equilibrium constant can be carried out in a school laboratory using an esterification reaction between ethanol and ethanoic acid in the presence ...
AQA A Level Chemistry復習筆記8.1.5 Iodine Clock Reaction
Iodine Clock Reaction Clock reactions are so called because they show a sharp dramatic colour change after a period of time has elapsed They make ideal reactions for studying kinetics Iodine...
AQA A Level Chemistry復習筆記8.1.4 Entropy of Vaporisation
Entropy of Vaporisation The entropy change when water boils can be measured using a kettle and a top pan balance At the boiling point, liquid water and water vapour exist in equilibrium so t...
AQA A Level Chemistry復習筆記8.1.3 Required Practical 9
Required Practical 9 Required Practical 9: Investigating pH changes The experimental set up for measuring pH changes in titrations Steps in the procedure Measure out 50 cm3?of 1.0 mol...
AQA A Level Chemistry復習筆記8.1.2 Required Practical 8
Required Practical 8 Required Practical 8: Measuring the EMF of a cell To measure a cell EMF you will need Two small beakers, around 75 cm3?capacity Strips of suitable metals such as copper,...
AQA A Level Chemistry復習筆記7.11.5 Interpreting Chromatograms
Interpreting Chromatograms The less polar components travel further up the TLC plate Their?Rf?values are higher?than those closer to the baseline They are?more soluble?in the mobile phase an...
AQA A Level Chemistry復習筆記7.11.4 Gas Chromatography
Gas Chromatography Gas-Liquid Chromatography (GLC) is used for analysing: Gases Volatile liquids Solids in their vapour form The stationary phase: This method uses a long coiled colum...
AQA A Level Chemistry復習筆記7.11.3 Column Chromatography
Column Chromatography Column Chromatography In column chromatography, the column is often a long vertical glass tube or in the laboratory a burette is suitable An inert solid (usually powder...
AQA A Level Chemistry復習筆記7.11.2 Thin Layer Chromatography
Thin Layer Chromatography Thin-layer chromatography (TLC) is a technique used to analyse small samples via separation For example, we could separate a dye out to determine the mixture of dye...
AQA A Level Chemistry復習筆記7.10.3 13C NMR
13C NMR Nuclear Magnetic Resonance (NMR) spectroscopy is used for analysing organic compounds Atoms with odd mass numbers usually show signals on NMR For example, isotopes of atoms Many of t...
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高考成績出爐了，面對這場千萬人參加的大考，高考生面臨的壓力可想而知，不少學生和家長將目光投向更廣闊的海外院校。澳洲擁有優質的環境和教育，以及靈活多樣的本科入學方式，成為高考留學雙保險的首選國家。 20...
