The pH of blood stream is maintained by a proper balance of H 2 C O 3 and N a H C O 3 concentration. What volume of 5 M N a H C O 3 solution should be mixed with a 10 mL sample of blood which is 2 M i

Question

The pH of blood stream is maintained by a proper balance of $H_{2} C O_{3}$ and $N a H C O_{3}$ concentration. What volume of 5 M $N a H C O_{3}$ solution should be mixed with a 10 mL sample of blood which is 2 M in $H_{2} C O_{3}$ in order to maintain its pH of 7.4?

$[p K_{a}$ for $H_{2} C O_{3} = 6.1] [1 0^{1.3} = 19.9]$

TestHub · Accepted Answer

p H = p K a + l o g HCO 3 - H 2 CO 3 Moles of H 2 CO 3 presenting blood sample = 2 × 0.01 = 0.02 Let V mL of N a H C O 3 is required = 5 × V = 5 V So p H = p K a + l o g 5 V 0.02 7.4 = 6.1 + l o g 5 V 0.02 V = 79 mL

Chemistry - Ionic Equilibrium Question with Solution | TestHub

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