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प्रश्न
Why is sulphuric acid used in the preparation of HCl and HNO3? Give equations in both cases.
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उत्तर
Concentrated sulphuric acid has a high boiling point (356°C). So, it is considered to be non-volatile. Hence, it is used for preparing volatile acids like hydrochloric acid and nitric acids from their salts by double decomposition.
\[\ce{NaCl + H2SO4 -> NaHSO4 + HCl}\]
\[\ce{NaNO3 + H2SO4 -> NaHSO4 + HNO3}\]
संबंधित प्रश्न
Sulphuric acid is manufactured by the contact process.
Give the conditions for the oxidation of SO2.
Sulphuric acid is manufactured by contact process.
why is Sulphuric acid not obtained directly by reacting SO3 with water.
Why the impurity of arsenic oxide must be removed before passing the mixture of SO2 and air through the catalytic chamber?
What property of conc. H2SO4 is made use of in the following case? Give an equation for the reaction in this case:
In the production of HCl gas when it reacts with chloride.
What property of conc. H2SO4 is made use of in the following case? Give an equation for the reaction in this case:
In the preparation of sulphur dioxide by warming a mixture of conc. sulphuric acid and copper turnings.
Define the following term:
Constant boiling mixture
Define the following term : Oleum
Fill in the blank with appropriate word/words :
The catalyst used in contact process for the manufacture of H2SO4 is ___________ or _________.
Name the two gases that are combined during the contact process.
Write balanced chemical equation for the reaction between zinc and dilute sulphuric acid.
(i) What is the purpose of the contact process ?
(ii) Name the catalyst used in the contact process.
(iii) Write the balanced equation for the reaction in the contact process, which takes place in the presence of catalyst.
