insulin osmotic 2.5 mmHg 25℃ 0.100 g insulin 125 mL mass

insulin osmotic 2.5 mmHg 25℃ 0.100 g insulin 125 mL mass

 

 

Insulin is a hormone responsible for the regulation of glucose levels in the blood. An aqueous solution of insulin has an osmotic pressure of 2.5 mmHg at 25℃. It is prepared by dissolving 0.100 g of insulin in enough water to make 125 mL of solution. What is the molar mass of insulin?

 

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π = MRT

( 참고 https://ywpop.tistory.com/1921 )

 

 

 

M = π / RT

= (2.5 / 760) / [(0.08206) (273.15 + 25)]

= 0.00013445 M

 

 

 

(0.00013445 mol/L) × 0.125 L = 1.680625e-5 mol insulin

( 참고 https://ywpop.tistory.com/7787 )

 

 

 

0.100 g / 1.680625e-5 mol = 5950 g/mol

( 참고 https://ywpop.tistory.com/7738 )

 

 

 

답: 5950 g/mol

 

 

 

 

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