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प्रश्न
How is heavy water prepared? Compare its physical properties with those of ordinary water.
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उत्तर
Heavy water can be prepared by exhaustive electrolysis of water. Comparison of physical properties of \[\ce{H2O}\] and \[\ce{D2O}\].
| Property | \[\ce{H2O}\] | \[\ce{D2O}\] | |
| (i) | Molecular mass (g mol–1) | 18.015 | 20.027 |
| (ii) | Melting point (K) | 273.0 | 276.8 |
| (iii) | Boiling point (K) | 373.0 | 374.4 |
| (iv) | Density (298 K) g cm–3 | 1.0000 | 1.1059 |
| (v) | Enthalpy of vapourisation (kJ mol–1) | 40.66 | 41.61 |
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संबंधित प्रश्न
A commercial sample of hydrogen peroxide marked as 100 volume H2O2, it means that
Volume strength of 1.5 N H2O2 is
Mention the uses of deuterium.
Explain the preparation of hydrogen using electrolysis.
Why does \[\ce{H+}\] ion always get associated with other atoms or molecules?
Hydrogen peroxide is ______.
Hydrogen peroxide is obtained by the electrolysis of ______.
What is the importance of heavy water?
What mass of hydrogen peroxide will be present in 2 litres of a 5 molar solution? Calculate the mass of oxygen which will be liberated by the decomposition of 200 mL of this solution.
Hydrogen peroxide is obtained by the electrolysis of ______.
Which of the following will happen when a little hydrogen peroxide is added to a solution of ferrous sulphate?
Hydrogen peroxide for the first time was prepared by:
H2O2 can be obtained when the following reacts with H2SO4 except with:
The volume of '10 Vol' of H2O2 required to liberate 500 mL O2 at NTP is ______.
The products obtained from a reaction of hydrogen peroxide and acidified potassium permanganate are ______.
In a basic medium, H2O2 exhibits which of the following reactions?
(A) \[\ce{Mn^{2+} -> Mn^{4+}}\]
(B) \[\ce{I2 -> I^-}\]
(C) \[\ce{PbS -> PbSO4}\]
Choose the most appropriate answer from the options given below.
The strength of the 11.2 volume solution of H2O2 is ______.
[Given that molar mass of H = 1 g mol−1 and O = 16 g mol−1)
