<prompt> Following are true about HCO3-except:Extracellular concentration 25 m molIntracellular concentration 10 m mol7.5 solution gives 2 nmolsIn kidney, HCO3- is produced by carbonic anhydrase  <response>: C i.e. 7.5 solution gives 2n molsConcentration of bicarbonate- Intracellular : 10 mmoVLQ- Extracellular : 27 mmolLQIn kidney bicarbonate is produced by carbonic anhydraseQ. 