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Northern IrelandChemistryQuick questions

A2 2 Analytical, Transition Metals, Electrochemistry and Organic Chemistry

Quick questions on Analytical chemistry: redox titrations and colorimetry - CCEA A-Level Chemistry

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.

What is q1?
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State why manganate(VII) needs no separate indicator. [1 mark]
What is q2?
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Write the equation for the reaction of iodine with thiosulfate. [1 mark]
What is q3?
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20.0 cm320.0\ \text{cm}^3 of 0.0100 mol dm30.0100\ \text{mol dm}^{-3} manganate(VII) reacts with iron(II) in a 1:51:5 ratio. Calculate the moles of iron(II). [2 marks]

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