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Pertanyaan

Berikut ini data hasil titrasi larutan CH subscript 3 COOH dengan larutan Ba left parenthesis OH right parenthesis subscript 2 0,1 M.

Konsentrasi larutan CH subscript 3 COOH sebesar ...

  1. 0,1250 M

  2. 0,0625 M

  3. 0,2500 M

  4. 0,6250 M

  5. 0,6300 M

S. Utari

Master Teacher

Mahasiswa/Alumni Universitas Negeri Medan

Jawaban terverifikasi

Pembahasan

Volume space rata minus rata space CH subscript 3 COOH  equals fraction numerator Vol space CH subscript 3 COOH space 1 plus Vol space CH subscript 3 COOH space 2 plus Vol space CH subscript 3 COOH space 3 over denominator Banyaknya space percobaan end fraction  equals fraction numerator 40 space space mL plus 40 space mL plus 40 space mL over denominator 3 end fraction equals 40 space mL    Volume space rata minus rata space Ba left parenthesis OH right parenthesis 2  equals fraction numerator Vol space Ba left parenthesis OH right parenthesis subscript 2 space 1 plus Vol space Ba left parenthesis OH subscript right parenthesis 2 end subscript space 2 plus Vol space Ba left parenthesis OH right parenthesis subscript 2 space 3 over denominator Banyaknya space percobaan end fraction  equals fraction numerator 24 space mL plus 25 space mL plus 26 space mL over denominator 3 end fraction equals 25 space mL    Untuk space menentukan space konsentrasi space CH subscript 3 COOH comma space digunakan space rumus space titrasi space asam space basa space yaitu space colon  straight a space straight x space Va space straight x space Ma equals straight b space straight x space straight V    Dimana colon space  straight a space equals space Jumlah space straight H space dalam space asam space  Va space equals space Volume space asam space left parenthesis mL right parenthesis space  Ma space equals space Molaritas space divided by space konsentrasi space asam space left parenthesis straight M right parenthesis straight b space straight x space Mb  straight b space equals space Jumlah space OH space dalam space basa space  Vb space equals space Volume space basa space left parenthesis mL right parenthesis space  Mb space equals space Molaritas space divided by space konsentrasi space basa space left parenthesis straight M right parenthesis    Maka comma  space space space space space space straight a space straight x space Va space straight x space Ma equals straight b space straight x space Vb space straight x space Mb  1 space straight x space 40 space mL space straight x space Ma equals 2 space straight x space 25 space mL space straight x space 0 comma 1 space straight M  space space space space space space space space space space space space space space space space space space space space space Ma equals space fraction numerator 5 space straight M over denominator 40 end fraction  space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 0 comma 125 space straight M

11

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