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NSWChemistryQuick questions

Module 8: Applying Chemical Ideas

Quick questions on Gravimetric analysis and precipitation titrations explained: HSC Chemistry Module 8

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

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Outline the steps of a gravimetric analysis for sulfate ions in water. [3 marks]
What is q2?
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A 100 mL water sample yields 0.247 g of AgClAgCl after addition of excess AgNO3AgNO_3. Calculate [Cl−][Cl^-] in mol L−1^{-1}. [3 marks]
What is q3?
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Mohr's method titrates Cl−Cl^- with AgNO3AgNO_3. (a) Write the equation for the indicator end point. (b) Explain why the pH must be between 7 and 9.5.

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