0.1000 M NaOH 20.46 ML KHP 204.22 G/mol - 좋은 습관
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0.1000 M NaOH 20.46 mL KHP 204.22 g/mol
농도를 모르는 프탈산수소포타슘(KHC8H4O4, KHP)를 적정하는데
0.1000 M NaOH 용액 20.46 mL가 필요하다.
KHP(몰질량 204.22 g/mol)는 한 개의 산성수소를 가진다.
수산화소듐으로 적정(완전히 반응)된 KHP의 그램 수는?
A student titrate an unknown amount of potassium hydrogen phthalate
(KHC8H4O4 often abbreviated KHP) with 20.46 mL of a 0.1000 M NaOH solution.
KHP(molar mass = 204.22 g/mol) has one acdic hydrogen.
How many grams of KHP were titrated (reacted completely)
by the sodium hydroxide solution?
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적정에 소비된 NaOH의 몰수를 계산하면,
(0.1000 mol/L) (20.46/1000 L) = 0.002046 mol NaOH
( 참고 https://ywpop.tistory.com/7787 )
= 0.002046 mol OH^-
( NaOH → Na^+ + OH^- )
산-염기 중화 반응의 알짜 이온 반응식
H^+ + OH^- → H2O
OH^-의 몰수 = H^+의 몰수 = 0.002046 mol
= KHP의 몰수
( KHP has one acdic hydrogen )
0.002046 mol × (204.22 g/mol) = 0.4178 g KHP
( 참고 https://ywpop.tistory.com/7738 )
답: 0.4178 g
[ 관련 예제 https://ywpop.tistory.com/8263 ] KHP와 NaOH의 산-염기 중화반응
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