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प्रश्न
Write the reactions of SO2 and oxides of nitrogen which leads to acid rain formation.
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उत्तर
Reactions of SO2:
\[\ce{SO2 + 1/2O2->[hv]SO3}\]
\[\ce{SO3 + H2O->H2SO4}\]
Reactions of oxide of nitrogen:
\[\ce{N2 + O2->[electric][discharge]2NO}\]
\[\ce{2NO + O2 -> 2NO2}\]
\[\ce{3NO2 + H2O->2HNO3 + NO }\]
संबंधित प्रश्न
Define an acidic salt.
Identify the odd one out and justify.
Explain salt hydrolysis.
Define the meaning of the term 'acid salt'.
What is meant by the term weak acid?
Salts A, B, C, D and E undergo reactions (i) to (v) respectively. Identify the anion present in these salts on the basis of these reactions. Tabulate your answers in the format given below:
(i) When silver nitrate solution is added to asolution of A, a white precipitate, insoluble in dilute nitric acid, is formed.
(ii) Addition of dilute hydrochloric acid to B produces a gas which turns lead acetate paper black.
(iii) When a freshly prepared solution of ferrous sulphate is added to a solution of C and concentrated sulphuric acid is gently poured from the side of the test, a brown ring is formed.
(iv) When dilute sulphuric acid is added to D, a gas is produced which turns acidified potassium dichromate solution from orange to green.
(v) Addition of dilute hydrochloric acid to E produces an effervescence. The gas produced turns limewater milky but does not affect acidified potassium dichromate solution.
| Salt | Anion |
| A | |
| B | |
| C | |
| D | |
| E |
Define the following and give two examples in case a normal salt .
Ca(H2PO4)2 is an example of a compound called _______ .
Why is toothpaste basic?
Give a suitable chemical term for:
A salt formed by incomplete neutralisation of an acid by a base.
