When iron sulfide is heated in air,a sulfur o | vedclass

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(A) The reaction of iron sulfide $(FeS_2)$ with air (oxygen) is: $4FeS_2 + 11O_2 \rightarrow 2Fe_2O_3 + 8SO_2$. Here,the sulfur oxide $A$ is sulfur di

Vedclass · Accepted Answer

$2$

Vedclass · Answer

(A) The reaction of iron sulfide $(FeS_2)$ with air (oxygen) is: $4FeS_2 + 11O_2 \rightarrow 2Fe_2O_3 + 8SO_2$. Here,the sulfur oxide $A$ is sulfur dioxide $(SO_2)$. When $SO_2$ is dissolved in water,it forms sulfurous acid $(H_2SO_3)$: $SO_2 + H_2O \rightarrow H_2SO_3$. Sulfurous acid $(H_2SO_3)$ is a diprotic acid,meaning it can donate two protons ($H^+$ ions) in an aqueous solution. Therefore,the basicity of $H_2SO_3$ is $2$.

When iron sulfide is heated in air,a sulfur oxide $A$ is formed. When $A$ is dissolved in water,it produces an acid. What is the basicity of this acid?

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