When a sample of KNO_(3) is subjected to heating, the volume of oxygen liberatedwas sufficient for thecombustion of one mole of ethylene. For giving same amount of oxygen, what is the amount of lead nitrate required ot be decomposed? Also, find out thevolume occupied by the gaseous products atSTP during this decomposition.

When a sample of KNO_(3) is subjected to heating, the volume of oxygen

1.	When a sample of KNO_(3) is subjected to heating, the volume of oxygen liberatedwas sufficient for thecombustion of one mole of ethylene. For giving same amount of oxygen, what is the amount of lead nitrate required ot be decomposed? Also, find out thevolume occupied by the gaseous products atSTP during this decomposition.
Answer» Solution :`2KNO_(3) to 2KNO_(2) + O_(2)` 1 mole of ethylene requires 3 moles of oxygen `2PB(NO_(3))_(2) to 2PbO + 4 NO_(2) + O_(2)` 6 moles of `Pb(NO_(3))_(2) ` is REQUIRED to given 3 moles of oxygen `:.` Weight of `Pb(NO_(3))_(2) = 6 xx 330 = 1980` g VOLUME occupied by gaseous `(NO_(2) and O_(2))` products ` = 15 xx 22.4 " L at STP " = 336` L