Answer : The balanced reaction is, [tex]HSO_4^-+HCN\rightleftharpoons H_2SO_4+CN^-[/tex]
Explanation :
According to the Brønsted-lowry concept, a substance is known as acid if it can donate a proton and as a base if it can accept a proton.
The given substance may be a molecule of an ion. The reaction of an acid with the base constitutes the transfer of a proton from acid to the base.
The balanced reaction will be,
[tex]HSO_4^-+HCN\rightleftharpoons H_2SO_4+CN^-[/tex]
In this reaction, [tex]HCN[/tex] is an acid and is donating a proton to the base [tex]HSO_4^-[/tex] and both are the reactants. [tex]H_2SO_4[/tex] is the conjugate acid of [tex]HSO_4^-[/tex] and [tex]CN^-[/tex] is the conjugate base of [tex]HCN[/tex] and [tex]H_2SO_4\text{ and }CN^-[/tex] are the products.
Hence, the balanced reaction is, [tex]HSO_4^-+HCN\rightleftharpoons H_2SO_4+CN^-[/tex]
