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NSWChemistryQuick questions
Module 8: Applying Chemical Ideas
Quick questions on Colourimetry, UV-vis and AAS explained: HSC Chemistry Module 8
4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is not zeroing on a matrix-matched blank?Show answer
If your sample is in acid, your blank should be the same acid. Water-only blanks under-correct.
What is q1?Show answer
State the Beer-Lambert law in symbols and words, and define each variable. [3 marks]
What is q2?Show answer
A calibration curve gives the equation where is in mg L. A sample reads 0.072 absorbance. Calculate the concentration.
What is q3?Show answer
A NSW HSC depth study uses AAS to measure iron in a tablet. (a) Explain why an iron hollow-cathode lamp is used. (b) Outline how a calibration curve is constructed.
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