Q. Which gaseous product is formed when a mixture of iron (II) sulphate and potassium nitrate is heated with dilute $H_{2}SO_{4}?$

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NO

$NO_{2}$

mixture of $NO_{2}$ and $N_{2}O_{4}$

$N_{2}O_{5}$

Solution:

When a mixture of iron (II) sulphate and potassium nitrate is heated with dilute $H_{2}SO_{4}$ No gas formed as follows
$6FeSO_{4}+2KNO_{3}+4H_{2}SO_{4} \rightarrow Fe_{2}\left(\right.SO_{4}\left(\left.\right)_{3}+K_{2}SO_{4}+4H_{2}O+2NO$

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