Question

$CO_2$ dissociates from carbamino haemoglobin when

• A. $PCO_2$ is high and $PO_2$ is low
• B. $PO_2$ is high and $PCO_2$ is low
• C. $PCO_2$ and $PO_2$ are equal
• D. none of the above

Answer 1

Answer: (B)

$PO_2$ is high and $PCO_2$ is low

Answer 2

High $PO_2$ and low $PCO_2$ in the lung blood capillaries favours separation of $CO_2$ from carbaminohaemoglobin.