Answer to Question #31130 in Other Chemistry for shreya
2. what happens when aqueous solution of sodium sulphate reacts with aqueous barium chloride?
3.when a black metal compound XO is heated with colourless gas Y. X is a reddish brown colour which does not react with dilute acid a t all.
2. Immediate milky appearance after 5-10 minutes a precipitate of BaSO4 will settle out of solution the the solution will be clear. You will obtain a cloudy, white precipitate that will remain so infantily. This is a precipitation reaction (the formation of an insoluble salt from a solution of soluble ones) which occurs because barium sulfate is insoluble, so when mixed, the barium ions react with the sulfate ions to form a white precipitate of barium sulfate.
3. CuO - black metal compound; H2 - colourless gas; Cu - reddish brown colour which does not react with dilute acid a t all
CuO + H2 --> Cu + H2O
Oxidizing agent = a substance that gains electrons in a redox chemical reaction. The oxidizing agent is reduced.(gains electrons)
CuO + H2 ==> Cu + H2O
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