K will always have an oxidation state of +1. Now O is -2 except in peroxides, this is not a peroxide, so total charge will be -6, if you subtract the +1 of K from it, it leaves -5 charge to be neutralized by Cl in KClO3, so Cl will be +5. In the product side, K will still have the same oxdiation which is +1 and Cl would have -1. O2 will have zero. <span>Now, Cl is gaining the electrons to go from +5 to -1, so it is getting reduced while O2 is losing electrons to go from -2 to zero so it is getting oxidized.</span>
The kind of element that has the greatest tendency to attract electrons are inert gases or noble gases, in the right side of the periodic table. It is because the nuclear charge is bigger for the elements in the right side of the periodic table, and inert gases or noble gases' atom is the best to attract electrons.
The mass of chlorine gas is calculated as follows
find the moles HCl , At STP 1moles = 22.4 liters
what about 174 L
moles = 174l x 1mole/22.4L= 7.77 moles
write the equation for reaction
H2 + Cl2 =2HCl
by
use of mole ratio between cl2 to HCl (1:2) the moles of Cl2 =7.77/2 = 3.885 moles
mass is therefore = 3.885 mol x 71 gmol = 275.84 grams
