Question

this is an activity:
1.TAKE ABOUT 100ML OF WATER IN A BEAKER AND DISSOLVE A SMALL QUANTITY OF SODIUM SULPHATE.
2.TAKE ABOUT 100ML OF WATER IN ANOTHER BEAKER AND DISSOLVE A SMALL QUANTITY OF BARIUM CHLORIDE.OBSERVE THE SOLUTIONS OBTAINED.
3.WHAT ARE THE COLOURS OF THE ABOVE SOLUTIONS?
4.CAN YOU NAME THE SOLUTIONS OBTAINED?
NOW MIX TWO SOLUTIONS AND OBSERVE THE CHANGE IN COLOURS.
DO YOU OBSERVE ANY CHANGE ON MIXING THESE TWO SOLUTIONS/

Answer 1

When sodium sulphate solution is added to barium chloride solution, barium sulphate which is a white precipitate is formed along with an aqueous solution of sodium chloride.

Answer 2

hope this helps you quickly
take about 100ml of water in another beaker and dissolve a small quantity of barium chloride
these two solutions are colourless
add na2so4 solution to bacl2 solution and observe
sodium sulphate solution on mixing with bacl2 solution forms a precipitate of barium sulphate and also soluble sodium chloride
na2so4+bacl2_baso4+2nacl
this is a double displacement reaction

hope this helps you
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