Multiple choice

The ---------------- compound is used to test for sulfate ion in the laboratory.

  1. Arsenic trioxide

  2. Arsenous acid

  3. Barium chloride

  4. Barium chromate
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

It is commonly used as a test for sulfate ion. In industry, barium chloride is mainly used in the purification of brine solution in caustic chlorine plants and also in the manufacture of heat treatment salts, case hardening of steel, in the manufacture of pigments, and in the manufacture of other barium salts. BaCl2 is also used in fireworks to give a bright green colour.

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