90 g C12H24O12 was dissolved in water to make 1 L solution

90 g C12H24O12 was dissolved in water to make 1 L solution

 

 

C12H24O12 (90 g) was dissolved in water to make 1 L solution.

How’s the molar concentration?

 

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> molar concentration = molarity = 몰농도(M)

 

> molality = 몰랄농도(m)

---> molal = 몰랄, 이렇게 구분하자.

( 참고 https://ywpop.tistory.com/2667 )

 

 

 

C12H24O12의 몰질량 = 12(12) + 24(1) + 12(16) = 360 g/mol

( 참고 https://ywpop.tistory.com/16840 )

 

 

 

n = W / M

( 참고 https://ywpop.tistory.com/7738 )

 

= 90 g / (360 g/mol)

= 0.25 mol

 

 

 

몰농도 = 용질 mol수 / 용액 L수

= 0.25 mol / 1 L

= 0.25 mol/L

= 0.25 M