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प्रश्न
Distinguish by dilute sulphuric acid.
Copper and magnesium?
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उत्तर
| Copper | Magnesium |
| Copper does not react with dilute sulphuric acid as its reduction potential is higher than that of hydrogen. | Magnesium metal dissolves readily in dilute sulphuric acid to form solutions containing the aquated Mg(II) ion together with hydrogen gas, H2. |
| Copper does not displace hydrogen from non-oxidising acids like HCl or dilute H2SO4. | Corresponding reactions with other acids such as hydrochloric acid also give the aquated Mg(II) ion. |
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संबंधित प्रश्न
Fill in the blank:
The basic conditions necessary for a chemical reaction is _______
State four conditions necessary for a chemical reaction to take place.
Choose the correct option from the bracket and explain the statement giving reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)
The conversion of ferrous sulphate to ferric sulphate is ______ reaction.
Explain the term reactant and product giving examples.
State the original colour of the following substance and colour of residue obtained after heating.
Lead nitrate
Give reason for the following:
A characteristic change of colour is seen when a piece of iron is added to copper [II] sulphate solution.
Name the following:
The products obtained during ‘photosynthesis’ – which is a chemical change.
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Copper nitrate.
Rusting of iron is ______.
What are the chemical reactions that occur in everyday life?
