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Posted by on Wednesday, September 19, 2012 at 5:12pm.

Although soluble barium compounds are
toxic, suspensions of insoluble barium sul-
fate are routinely swallowed for upper gas-
trointestinal X-ray studies. Why is barium
carbonate not used?
1. Stomachs contain HCl and all carbonates
dissolve in acid.2. Barium carbonate is too expensive.
3. Barium carbonate is soluble in plain wa-
4. All carbonates are toxic, whether soluble
or not.

  • chemistry - , Wednesday, September 19, 2012 at 8:38pm

    Big hint: BaSO4 doesn't dissolve in acids(actually it does a little but it is VERY little); BaCO3 does.

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