Tag: oxygen

Questions Related to oxygen

Pick the group which does not contain a neutral oxide.

chemistry chemistry of non-metals oxides of elements simple oxides oxygen

  1. $NO _2, P _4O _{10}, Al _2O _3, NO$

  2. $MgO, N _2O _5, SO _3, N _2O$

  3. $CO _2, SO _3, CaO, XeO _3$

  4. $CO, SiO _2, SnO _2, Na _2O _3$

Show answer
Correct Option: A
Explanation:

Neutral oxide are those which do not react with acids as well as bases such as $NO,{ N } _{ 2 }O,CO,{ O } _{ 2 }{ F } _{ 2 }$.

So only option $C$ does not contain neutral oxide.

In view of the signs of $\Delta _{r}G^{0}$ for the following reactions :
$PbO _{2} +Pb \rightarrow 2PbO, \Delta _ {r}..G..^{0},0$
$SnO _{2} +Sn \rightarrow 2SnO, \Delta _ {r}..G..^{0},0$

chemistry chemistry of non-metals oxides of elements simple oxides oxygen

  1. For lead +2, for tin +2

  2. For lead +4, for tin +4

  3. For lead +2, for tin +4

  4. For lead +4, for tin +2

Show answer
Correct Option: A

Among the following which one has more acidic character?

chemistry chemistry of non-metals oxides of elements simple oxides oxygen

  1. $B _{2}O _{3}$

  2. $CO _{2}$

  3. $N _{2}O _{3}$

  4. None of these

Show answer
Correct Option: A
Explanation:

$B _2O _3$ is more acidic than $CO _2$ and $N _2O _5$ because oxides of elements of 13th group of modern periodic table is more acidic than than 14th and 15th group elements.