Final answer:
H2CO3 is an acid in aqueous solutions because it donates H+ ions when dissolved in water. The compound that is an acid in aqueous solutions among the options provided is H2CO3 (carbonic acid). In aqueous solutions, H2CO3 can donate protons (H+ ions) to water, exhibiting the characteristic behavior of an acid according to the Bronsted-Lowry definition.
Step-by-step explanation:
The compound that is an acid in aqueous solutions is H2CO3 (Option a). In aqueous solution, it dissociates into H+ and HCO3-. This is an acid because it donates H+ ions when dissolved in water.
H2CO3 is an acid in aqueous solutions because it donates H+ ions when dissolved in water. The compound that is an acid in aqueous solutions among the options provided is H2CO3 (carbonic acid). In aqueous solutions, H2CO3 can donate protons (H+ ions) to water, exhibiting the characteristic behavior of an acid according to the Bronsted-Lowry definition.