20cm^3 of Cl2 reacts wif 40cm^3 of O2 to form 40cm^3 of gaseous oxide of Cl2.All volumes are measured at r.t.p..
wt is the molecular formula of this oxide? explain ur ans. thx=]
A.ClO B. Cl2O C.ClO2 D. Cl2O3
chem Q : wt is the molecular formula of this oxide?
2009-10-17 5:47 pm
回答 (2)
2009-10-17 6:12 pm
✔ 最佳答案
C ClO2 IS the formula as chlorine and oxygen both are diatomic, one molecule contains two atoms of the gas. 20cm^3 of chlorine combine with 40cm^3 of oxygen to form 40cm^3 of oxide means one atom of chlorine is combining with two atoms of oxygen and the total volume is 40cm^3.The relation is derived from Avogadro's number and molar relationship.
2009-10-18 12:57 am
As the volume of any gas at same pressure and temperature is directly proportional to the number of moles, we can divide by 20 t/o and get:
Cl2 + 2O2 = 2? so ? must be ClO2. D
Cl2 + 2O2 = 2? so ? must be ClO2. D
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