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प्रश्न
Give a balanced chemical equation for Laboratory preparation of Nitric acid.
उत्तर
Nitric acid is prepared by the reaction of conc. sulphuric acid with potassium or sodium nitrate.
\[\ce{KNO3 + H2SO4 ->[<200°C] KHSO4 + HNO3}\]
\[\ce{NaNO3 + conc{.} H2SO4 -> NaHSO4 + 2HNO3}\]
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