Question

The reabsorption of $HC{O}_3$ takes place in

Answer 1

Most of the bicarbonate ion ($HC{O}_3^{-}$) reabsorption takes place in the proximal convoluted tubule of the nephron (85-90%) and only a small portion is reabsorbed by the distal convoluted tubule and the loop of Henle. So, the reabsorption of $HC{O}_3^{-}$ can be said to take place in the proximal convoluted tubules of the nephron, in the kidney.