Which of the following pairs of oxoacids have | vedclass

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(A) The basicity of an oxoacid is determined by the number of $OH$ groups directly attached to the central atom.$H_3PO_3$ (Phosphorous acid) has two $

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$H_3PO_3, H_2SO_4$

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(A) The basicity of an oxoacid is determined by the number of $OH$ groups directly attached to the central atom.$H_3PO_3$ (Phosphorous acid) has two $OH$ groups and one $P-H$ bond, so its basicity is $2$.$H_2SO_4$ (Sulfuric acid) has two $OH$ groups attached to the sulfur atom, so its basicity is $2$.$H_3PO_2$ (Hypophosphorous acid) has one $OH$ group and two $P-H$ bonds, so its basicity is $1$.$H_2SO_3$ (Sulfurous acid) has two $OH$ groups, so its basicity is $2$.$H_3PO_4$ (Phosphoric acid) has three $OH$ groups, so its basicity is $3$.$H_2S_2O_8$ (Peroxodisulfuric acid) has two $OH$ groups, so its basicity is $2$.Therefore, the pair $H_3PO_3$ and $H_2SO_4$ both have a basicity of $2$.

Which of the following pairs of oxoacids have a basicity of $2$?

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