JEE MAIN - Chemistry (2008 - No. 6)
Four species are listed below
i. $$HCO_3^−$$
ii. $$H_3O^+$$
iii. $$HSO_4^−$$
iv. $$HSO_3F$$
Which one of the following is the correct sequence of their acid strength?
i. $$HCO_3^−$$
ii. $$H_3O^+$$
iii. $$HSO_4^−$$
iv. $$HSO_3F$$
Which one of the following is the correct sequence of their acid strength?
iv < ii < iii < I
ii < iii < i < iv
i < iii < ii < iv
iii < i < iv < ii
Explanation
The correct order of acidic strength of the given species in
$$\mathop {HS{O_3}F}\limits_{\left( {iv} \right)} > \mathop {{H_3}{O^ + }}\limits_{\left( {ii} \right)} > \mathop {HS{O_4}^ - }\limits_{\left( {iii} \right)} > \mathop {HC{O_3}^ - }\limits_{\left( i \right)} $$
or$$\,\,\,\left( i \right) < \left( {iii} \right) < \left( {ii} \right) < \left( {iv} \right)$$
It corresponds to choice $$(c)$$ which is correct answer.
$$\mathop {HS{O_3}F}\limits_{\left( {iv} \right)} > \mathop {{H_3}{O^ + }}\limits_{\left( {ii} \right)} > \mathop {HS{O_4}^ - }\limits_{\left( {iii} \right)} > \mathop {HC{O_3}^ - }\limits_{\left( i \right)} $$
or$$\,\,\,\left( i \right) < \left( {iii} \right) < \left( {ii} \right) < \left( {iv} \right)$$
It corresponds to choice $$(c)$$ which is correct answer.
Comments (0)
