- #1
danne89
- 180
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I can't solve this: 1.63 g crom oxid gave 1.12 g crom during analysis. Calculate the empiric forumla of crom oxid.
% Cr = 1.12 : 1.63 * 100 = 68.7 %
% O = 100 - 68.7 = 31.3 %
Cr_xO_y
x:y = 68.7 : Cr : 31.3 : O
= 68.7 : 52 : 31.3 : 16
= 1.32 : 1.96
= 1 : 1
CrO
Which is completely wrong.
% Cr = 1.12 : 1.63 * 100 = 68.7 %
% O = 100 - 68.7 = 31.3 %
Cr_xO_y
x:y = 68.7 : Cr : 31.3 : O
= 68.7 : 52 : 31.3 : 16
= 1.32 : 1.96
= 1 : 1
CrO
Which is completely wrong.