ChemistryHardHigh School (11–12)Organic Chemistry: Some Basic Principles and Techniques › Purification and Analysis of Organic CompoundsNEETJEE Main
Created by StemPy LabIn Carius method, of an organic compound is heated with fuming nitric acid and silver nitrate, and gives of silver chloride, which is filtered, washed, dried and weighed. Each molecule of the compound has two chlorine atoms. Atomic masses in : Cl 35.5, Ag 108. What is the molar mass of the compound?
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← Assertion (A): A student fuses hydrazine, N₂H₄, with sodium, as in Lassaigne's test, and boils the extract with iron(II) sulphate and then acid. Although hydrazine contains nitrogen, no Prussian blue colour appears. Reason (R): In the fusion, nitrogen is changed to sodium cyanide only together with carbon from the compound: Na + C + N → NaCN.A teacher asks four students for a laboratory route to an alkane. The rule is strict: the alkane named must be the only alkane in the product. The alkyl halides are treated with sodium in dry ether. The sodium salts are either heated with soda lime or electrolysed in water. Which route, with the product the student names, is correct? →
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