Sel Kimia Flashcards

1
Q

Apakah sel kimia ringkas?

A
  • 2 kepingan logam berlainan jenis yg dicelup ke dalam elektrolit dan disambung dengan wayar penyambung
  • dikenali sbg sel voltan / sel galvani
  • tukar tenaga kimia -> tenaga elektrik
  • t/balas redoks yg berlaku dlm sel menyebabkan pengaliran elektron.
  • beza keupayaan yg dikesan pada voltmeter menunjukkan arus elektrik terhasil
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2
Q

Di terminal negatif berlaku tindak balas ____?

A

Pengoksidaan

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3
Q

Nilai E° lebih negatif menjadikan logam itu terminal _______?

A

negatif

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4
Q

Logam di terminal manakah yang akan membebaskan elektron?

A

Terminal negatif

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5
Q

Anod ialah tempat berlaku t/balas ______?

A

Pengoksidaan

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6
Q

Arus mengalir dari terminal _____ ke terminal _____?

A

Positif ke negatif

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7
Q

Elektron mengalir dari terminal _____ ke terminal _____?

A

Negatif ke positif

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8
Q

Apakah fungsi titian garam / pasu berliang?

A

Membenarkan pergerakan ion dan melengkapkan litar

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9
Q

Pemerhatian apabila atom zink membebaskan elektron untuk membentuk ion Zn2+?

A

Elektrod zink menjadi semakin nipis

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10
Q

Pemerhatian apabila ion Cu2+ menerima elektron untuk membentuk atom Cu?

A

Elektrod kuprum menjadi semakin tebal dan warna biru larutan kuprum(ll) sulfat makin pudar

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11
Q

Bacaan voltan E° sel bagi sel Daniell?

A

E° sel = E° katod - E° anod

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