Q10 of 37 Page 1

Complete the following chemical equations:

(i) F2 + 2Cl-→


(ii) 2XeF2 + 2H2O →


OR


What happens when


(i) HCl is added to MnO2


(ii) PCl5 is heated


Write the equations involved.

(i) F2 + 2Cl-→ Cl2 + 2F-


Explanation: F2 > Cl2 > Br2 > I2 - oxidizing strength


So, fluorine is a stronger oxidizing agent than chlorine. Hence it oxidizes Cl, that means increases oxidation number of Cl and itself reduces.


(iii) XeF2 + H2O Xe + 0.5O2 + 2HF


OR


(i) HCl is added to MnO2


4HCl + MnO2 MnCl2 + Cl2 + 2H2O


(ii) PCl5 is heated


PCl5 PCl3 + Cl2


PCl5 is thermally less stable than PCl3. On heating it sublimes, but on stronger heating decomposes to form chlorine gas and PCl3.


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