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Pertanyaan

Proses elektolisis lelehan NaCl dengan elektroda karbon, digunakan arus sebesar 10 ampere selama 30 menit. Massa logam natrium yang diperoleh adalah ….

(Ar Na=23, Cl=35,5)

  1. fraction numerator 23 cross times 10 cross times 30 cross times 60 over denominator 96500 end fraction

  2. fraction numerator 23 cross times 10 cross times 30 over denominator 96500 end fraction

  3. fraction numerator 58 comma 5 cross times 10 cross times 30 cross times 60 over denominator 96500 end fraction

  4. fraction numerator 58 comma 5 cross times 10 cross times 30 over denominator 96500 end fraction

  5. fraction numerator 58 comma 8 cross times 10 cross times 30 cross times 60 over denominator 2 cross times 96500 end fraction

S. Utari

Master Teacher

Mahasiswa/Alumni Universitas Negeri Medan

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Pembahasan

Reaksi space elektrolisis space lelehan space NaCl colon space space  Reduksi space colon space Na to the power of plus space plus space straight e space rightwards arrow space Na space left parenthesis straight s right parenthesis space  Oksidasi space colon space 2 Cl to the power of minus space rightwards arrow space Cl squared space plus space 2 straight e  Rumus space massa space logam space natrium space equals space fraction numerator A r italic space N a italic space italic cross times italic space i italic space italic cross times italic space t over denominator 96500 italic space italic cross times italic space e end fraction  Dimana space colon space  straight i equals space arus space left parenthesis ampere right parenthesis space  straight t space equals space waktu space left parenthesis sekon right parenthesis space  straight e equals space jumlah space elektron space yang space terlibat space left parenthesis kalau space Na space hanya space 1 space elektron comma space sesuai space golongannya space yaitu space IA right parenthesis space space  Maka comma space gram space logam space Na space equals fraction numerator Ar italic space Na italic space italic cross times italic space straight i italic space italic cross times italic space straight t over denominator 96500 italic space italic cross times italic space straight e 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 space space space space space space space space space space space space space space equals fraction numerator 23 space cross times space 10 space ampere space cross times space 30 space cross times space 60 space detik over denominator 96500 space cross times space 1 end fraction

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