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प्रश्न
Write balanced equations for NaCl is heated with sulphuric acid in the presence of MnO2
उत्तर
`4NaCl + MnO_2 + 4H_2SO_4 -> MnCl_2 + 4NaHSO_4 + 2H_2O + Cl_2`
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संबंधित प्रश्न
Write the conditions to maximize the yield of H2SO4 by contact process.
Complete the following equations: C + conc. H2SO4 →
What happens when dilute sulphuric acid is treated with Fe
What happens when dilute sulphuric acid is treated with CaF2
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?
Write chemical reactions for different steps in the manufacture of sulphuric acid by lead chamber process. Draw the structure of phosphorous pentachloride
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.
Write the reaction of conc. \[\ce{H2SO4}\] with sugar.
Identify the INCORRECT statement about H2SO4.
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 ____________.
In the manufacture of sulphuric acid by contact process Tyndall box is used to ____________.
Hot conc. \[\ce{H2SO4}\] acts as the moderately strong oxidising agent. It oxidises both metals and non-metals. Which of the following element is oxidised by conc. \[\ce{H2SO4}\] into two gaseous products?
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 \[\ce{SO2}\].
What is the catalyst used for the oxidation of SO2 to SO3 in the lead chamber process for the manufacture of sulphuric acid?
