A white crystalline salt imparts a violet colour to a Bunsen flame

CHEMISTRY · Single correct · GCSE · Chemistry · Chemical Analysis · Chemical Analysis

Problem

A white crystalline salt imparts a violet colour to a Bunsen flame, and with hot concentrated H2SO4H_2SO_4 , forms a pungent gas. On treatment with an AgNO3AgNO_3 solution, this gas forms a white precipitate readily soluble in NH3NH_3 . The white crystalline salt may be: (1) Na2SO4Na_2SO_4 (2) KClKCl (3) CaCl2CaCl_2 (4) SrCl2SrCl_2

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