Q. 2 I5.0( 1 Vote )

Mention the

Answer :

i. P4(s) + 5O2(g) P4O10(s)


It is a reaction in which non-metallic element combines with dioxygen gas to form oxide.


ii. SO2(g) + H2O(l) H2SO3 (l)


This is a type of synthesis reaction. This reaction is used in the preparation of sulphurous acid


iii. P4(s) + 6Cl2(g) 4PCl3(g)


The above reaction is a type of synthesis reaction. This reaction is used in the preparation of phosphorus trichloride.


iv. O2(g) + 2H2(g) 2H2O (l)


It is a reaction in which non-metallic element reacts with dihydrogen gas to form stable hydride compounds.


v. Mg(s) + H2O(g) MgO (s) + H2 (g)


It is a reaction in which a less active metal reacts with water to form dihydrogen gas. The other less active metals are zinc and iron.


vi. 3Fe(s) + 4H2O(g) Fe3O4(s) + 4H2(g)


It is also a reaction in which a less active metal reacts with water to form dihydrogen gas.


vii. CO (g) + H2O(g) CO2 (g) + H2 (g)


This is a reaction in which mixture of water gas (CO2 and H2) is passed with water vapour to produce excess dihydrogen gas and to remove carbon monoxide.


viii. 3NO2 (g) +H2O(l) 2HNO3 (l) + NO(g)


The above reaction is a part of Ostwald process.


ix. S(s) +6HNO3(aq) H2SO4(aq) + 6NO2(g) + 2H2O(l)


It is a reaction in which sulphur reacts with nitric acid to form sulphuric acid, nitrogen dioxide and water.


x. SO3(g) + H2SO4(aq) H2S2O7(l)


The above reaction is a type of synthesis reaction. This reaction is used in the preparation of oleum (H2S2O7) which is also known as fuming sulphuric acid.


xi. C12H22O11(s)+ Con H2SO4(l) 12C (s) +11H2O(l)


The above reaction is a type of dehydration reaction. The sulphuric acid acts as a dehydrating agent. It removes the water from sugar (C12H22O11) and burn it.


xii. CaCO3(s) + dil H2SO4(aq) CaSO4(aq) + CO2(g) + H2O(l)


The above reaction is a type of dehydration reaction. The sulphuric acid will act as a dehydrating agent. It produces calcium sulphate, carbon dioxide and water.


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