A-LevelChemistryIntroduction to organic chemistry9701/12 · Oct/Nov 2009 · Q181 Mark

In an historically famous experiment Wöhler heated 'inorganic' ammonium cyanate in the absence of air. The only product of the reaction was 'organic' urea, CO(NH2)2. No other products were formed in the reaction. What is the formula of the cyanate ion present in ammonium cyanate?

ACNO⁻

BCNO2⁻

CCO⁻

DNO⁻

✓ Correct answer

A: CNO⁻

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Topic: Introduction to organic chemistry, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2009 Paper 1 Variant 2, question 18.

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In an historically famous experiment Wöhler heated 'inorganic' ammonium cyanate in the absence of air. The only product of the reaction was 'organic' urea, CO(NH2)2. No other products were formed in the reaction. What is the formula of the cyanate ion present in ammonium cyanate?

✓ Correct answer

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