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Name the gas evolved when potassium nitrate crystals are heated with concentrated sulphuric acid. |
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Answer» When potassium nitrate (KNO3) crystals are heated with concentrated sulphuric acid (H2SO4) then vapours of nitric acid (HNO3) are evolved and potassium bisulphate is also formed. KNO3 + H2SO4→ HNO3 + KHSO4 |
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