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प्रश्न
Write chemical reactions for different steps in the manufacture of sulphuric acid by lead chamber process. Draw the structure of phosphorous pentachloride
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उत्तर
2SO2 + O2 +2H2O`overset("No" )(->)`2H2SO4
The above net reaction can be written as the sum of the following reactions taking place in different steps.
1) 2H2O +NO `rightarrow` HNO3 +3H+
2) S + O2 `rightarrow` SO2 (Oxidation of sulphur)
3) 2HNO3 + 2SO2 `rightarrow` H2O +NO +NO2 +2SO3
Nitric acid or NO2 is used to oxidize SO2 to SO3.
Or SO2 +NO2 `rightarrow` SO3 + NO
4) SO3 +H2O `rightarrow` H2SO4
Sulphur trioxide reacts with water to form H2SO4 .
Structure of phosphorous pentachloride :
Phosphorous has 5 valence electrons. Each electron is shared with a chlorine atom.
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संबंधित प्रश्न
What is molecular formula of oleum?
(a) H2SO3
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(c) H2S2O7
(d) H2S2O8
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Draw the structure of the following:
H2SO4
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Describe the manufacture of H2SO4 by contact process?
Write balanced equations for NaCl is heated with sulphuric acid in the presence of MnO2
What happens when dilute sulphuric acid is treated with CaF2
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When concentrated sulphuric acid was added to an unknown salt present in a test tube a brown gas (A) was evolved. This gas intensified when copper turnings were added to this test tube. On cooling, the gas (A) changed into a colourless solid (B).
1) Identify (A) and (B).
2) Write the structures of (A) and (B).
3) Why does gas (A) change to solid on cooling?
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S+H2SO4(conc.) →
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b. Sulphurous acid
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The molecular formula of oleum is ____________.
The sulfuric acid obtained by contact process is ____________ % pure.
Which among the following catalysts is used in manufacture of sulphuric acid by contact process?
What is the ratio of volumes of gases involved in the preparation of sulphur trioxide from sulphur dioxide and dioxygen respectively under similar conditions of temperature and pressure?
The oxidation number of sulphur in Na2S4O6 is:-
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What is the catalyst used for the oxidation of SO2 to SO3 in the lead chamber process for the manufacture of sulphuric acid?
