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hassam said:1.2 g of an oxide MO of a metal M was dissolved in an excess sulfuric acid. 25.0 cm3 of
0.10 mol dm−3 potassium dichromate(VI) solution was required to oxidise M2+ to M3+.
What is the relative atomic mass of M?
A 52
B 56
C 64
D 80
Saturation said:Number 35, I get that MgO and and BaO will form, but won't the MgO formed react with the NO2 (acidic oxide), forming magnesium nitrate? Please explain!
The answers B btw.
http://www.xtremepapers.me/CIE/Internat ... 7_qp_1.pdf
Oops, my bad. LolAloo007 said:@ rafaysid hahaha it says aloo as in a patato not aleena
Xthegreat said:Saturation said:Number 35, I get that MgO and and BaO will form, but won't the MgO formed react with the NO2 (acidic oxide), forming magnesium nitrate? Please explain!
The answers B btw.
http://www.xtremepapers.me/CIE/Internat ... 7_qp_1.pdf
Ba is more electropositive than Mg, hence Mg cannot displace Ba.
Ans is Dintel1993 said:hey why cant A be the answer???
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