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प्रश्न
What is molecular formula of oleum?
(a) H2SO3
(b) H2SO4
(c) H2S2O7
(d) H2S2O8
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उत्तर
(c) H2S2O7
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संबंधित प्रश्न
Complete the following equations: CaF2+H2SO4 →
Draw the structure of the following:
H2SO4
Mention three areas in which H2SO4 plays an important role.
Why is `K_(a_2) "<<" K_(a_1)` for `H_2SO_4` in water?
Describe the manufacture of H2SO4 by contact process?
Write balanced equations for NaCl is heated with sulphuric acid in the presence of MnO2
What is the action of concentrated sulphuric acid on phosphorous pentachloride
What happens when dilute sulphuric acid is treated with Fe
What happens when dilute sulphuric acid is treated with CaF2
What is the action of concentrated sulphuric acid on potassium chlorate?
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?
Complete and balance the following equations:
S+H2SO4(conc.) →
Write a balanced chemical equation for the following reaction:
Sulphuric acid is treated with phosphorous.
Write structure and molecular formula for the following compounds:
a. Orthophosphoric acid
b. Sulphurous acid
Write the formula for pentaamminechlorocobalt (III) sulphate.
Which of the following reaction is NOT involved in contact process used for manufacturing sulfuric acid?
Identify the INCORRECT statement about H2SO4.
Identify the products formed when conc. sulfuric acid reacts with calcium fluoride.
Gas 'X' is prepared by treating sodium sulfite with dilute sulfuric acid. When gas 'X' is oxidised by dioxygen in presence of vanadium (V) oxide, gas 'Y' is formed. Identify X and Y.
The molecular formula of oleum is ____________.
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?
In the manufacture of sulphuric acid by contact process Tyndall box is used to ____________.
Which of the following statements are correct?
(i) S – S bond is present in \[\ce{H2S2O6}\].
(ii) In peroxosulphuric acid \[\ce{(H2SO5)}\] sulphur is in +6 oxidation state.
(iii) Iron powder along with \[\ce{Al2O3}\] and \[\ce{K2O}\] is used as a catalyst in the preparation of \[\ce{NH3}\] by Haber’s process.
(iv) Change in enthalpy is positive for the preparation of \[\ce{SO3}\] by catalytic oxidation of \[\ce{SO2}\].
