Which of the following ions will cause the precipitation of BaSO4 from a solutio

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Question: Which of the following ions will cause the precipitation of BaSO4 from a solution of barium chloride?

Options:

Correct Answer: SO4^2-

Solution:

The presence of SO4^2- ions will react with Ba2+ ions to form insoluble BaSO4, causing precipitation.

Which of the following ions will cause the precipitation of BaSO4 from a solution of barium chloride?

Which of the following ions will cause the precipitation of BaSO4 from a solution of barium chloride?

Step 1: Identify the ions present in the solution of barium chloride (BaCl2). The main ions are Ba2+ and Cl-.
Step 2: Understand what precipitation means. Precipitation occurs when two ions combine to form an insoluble compound.
Step 3: Know that BaSO4 (barium sulfate) is an insoluble compound that can form when Ba2+ ions react with SO4^2- ions.
Step 4: Determine which ion can provide SO4^2- ions. Look for sulfate ions (SO4^2-) in the options given.
Step 5: Conclude that if SO4^2- ions are present in the solution, they will react with Ba2+ ions to form BaSO4, leading to precipitation.

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