Shift of HCO3– out of RBC in exchange for Cl– is known as
High-Yield Explanation
CO2 diffuses through tissue to enter plasma
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Inside RBC, CO2 rects with H2O to form Carbonic acid (H2CO3)
↓
H2CO3 Splits to form H+ and HCO3– with the help of enzyme Carbonic anhydrase.