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प्रश्न
Write the equation for :
The preparation of hydrogen chloride from sodium chloride and sulphuric acid. State whether the sulphuric acid should be concentrated or dilute.
एका वाक्यात उत्तर
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उत्तर
\[\ce{\underset{\text{Sodium chloride}}{NaCl} + \underset{\text{Sulphuric acid(Conc.)}}{H2SO4} ->[<200°C] \underset{\text{Sodium hydrogen sulphate}}{NaHSO4} + \underset{\text{Hydrogen chloride gas}}{HCl}}\]
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