Chemistry
Study the following observations and name the anions present in each of the reactions.
(a) When a crystalline solid 'P' is warmed with concentrated H2SO4 and copper turnings a reddish brown gas is released.
(b) When few drops of dilute sulphuric acid is added to Salt 'R' and heated, a colourless gas is released which turns moist lead acetate paper silvery black.
(c) When few drops of barium nitrate solution is added to the salt solution 'Q', a white precipitate is formed which is insoluble in HCl.
Practical Chemistry
ICSE 2023
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Answer
(a) Nitrate [NO3-]
(b) Sulphide [S2-]
(c) Sulphate [SO42-]
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