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प्रश्न
Draw a labelled diagram and explain the laboratory preparation of hydrogen chloride gas. Give the balanced equations.
रासायनिक समीकरणे/रचना
आकृती
स्पष्ट करा
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उत्तर
Reactants: Sodium chloride and concentrated sulphuric acid.
Reaction and conditions: The reaction takes place as follows:
\[\ce{\underset{Sodium chloride}{NaCl} + \underset{Sulphuric acid}{H2SO4} ->[\lt 200^\circ C] \underset{sulphate}{\underset{Sodium hydrogen}{NaHSO4}} + \underset{chloride gas}{\underset{Hydrogen}{\text{HCl}_{(g)}}}}\]
Above 200°C, sodium sulphate is formed.
\[\ce{NaCl + H2SO4 -> NaHSO4 + HCl_{(g)}}\]
\[\ce{NaCl + NaHSO4 -> \underset{Sodium sulphate}{Na2SO4} + HCl}\]
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