Barium chloride BaCl2 test for sulfates Chemical Equation xp

Barium chloride (BaCl2) test for sulfates Chemical Equation xplanation Procedure Observation lum+Bach Cloud y 12 H20 KA1(S04); 2 Heated 3 no re AlomtisitWen Cloudy Again 4 What do the results from the barium chloride test indicate about your product? What do the results indicate about \"the sample after burning\"?

Solution

Test for sulfates

In the above barium chloride tests, we see pure alum with BaCl2 produces cloudy precipitate of BaSO4 in solution. Sulfate present.

When heated the test gave no change as no formation of BaSO4 in this case occured. Sulfate absent

When after heating more is added, the sample gave cloudyness again, due to formation of fresh alum which reacted with BaCl2 to form BaSO4 in solution. Sulfate present.