Question

i) wrive litharge ( 2 quad(0.789) )
wt ( cdot ) of ( operatorname{leg} d^{circ}=10 mathrm{g} )
Whint oxegen 789
in litharge wt of oxygen that combines with I g of lead = 0.078 Similarly,
ii) wt of oxy glen in 9.775 g of red
lead? ( (9 cdot 775-8 cdot 854)=0.921 g )
( therefore 18 ) OF Pb in combination with
[
0.921 / 8 cdot 854=0.104 g
]
Wi ( > ) Similarly
[
infty t cdot 0,0,2,1 n<4 cdot 87,90,0,150
]
( Rightarrow 4 cdot 87-4 cdot 216=0 cdot 654902 )
( therefore ) i g of lead in Pbo cosn bineswith
[
0 cdot 654 / 4 cdot 216=0 % 5390002
]
The ratio of 0,2 thret com lines with If ( P b ) in ( P b 0 ), red. Rend & lead peroxide i 8
[
0.078: 0.104: 0.155
]
( 1: frac{4}{3}: 20 r )
3: 4: 6
5
This shows the lano of muldiple Proportiong

# Prupul LULIS. 8. (1) 10 g of lead on heating gave 10.78 g of litharge, PbO. (ii) 9.775 g of red lead (Pb202) yielded on strong heating 9.545 g of litharge. (iii) 4.87 g of lead peroxide (PbO2) gave on heating 4.545 g of litharge. Show that these results illustrate the law of multiple proportions.

Solution