Perhatikan reaksi berikut ini! Zn(OH)42−​(aq)⇌Zn(OH)2​(s)+2OH−(aq)   Apa persamaan Kc dari reaksi di atas?

Pertanyaan

Perhatikan reaksi berikut ini!

begin mathsize 12px style Zn open parentheses O H close parentheses subscript 4 to the power of 2 minus sign end exponent open parentheses aq close parentheses equilibrium Zn open parentheses O H close parentheses subscript 2 open parentheses s close parentheses and 2 O H to the power of minus sign open parentheses aq close parentheses end style  

Apa persamaan Kc dari reaksi di atas?

  1. begin mathsize 12px style fraction numerator open square brackets Zn open parentheses O H close parentheses subscript 2 close square brackets open square brackets O H to the power of minus sign close square brackets squared over denominator open square brackets Zn open parentheses O H close parentheses subscript 4 to the power of 2 minus sign end exponent close square brackets end fraction end style

  2. begin mathsize 12px style open square brackets O H to the power of minus sign close square brackets squared over open square brackets Zn open parentheses O H close parentheses subscript 4 to the power of 2 minus sign end exponent close square brackets squared end style

  3. begin mathsize 12px style fraction numerator open square brackets O H to the power of minus sign close square brackets squared over denominator open square brackets Zn open parentheses O H close parentheses subscript 4 to the power of 2 minus sign end exponent close square brackets end fraction end style

  4. undefined

  5. undefined

Q. 'Ainillana

Master Teacher

Mahasiswa/Alumni Universitas Negeri Yogyakarta

Jawaban terverifikasi

Pembahasan

Pada penentuan konstanta kesetimbangan konsentrasi (Kc), fase yang masuk persamaan hanya fase gas dan larutan. Oleh sebab itu, nilai Kc dari reaksi di atas adalah:

begin mathsize 14px style K italic c equals fraction numerator product open square brackets italic p italic r italic o italic d italic u italic k close square brackets to the power of italic k italic o italic e italic f end exponent over denominator product open square brackets italic r italic e italic a italic k italic t italic a italic n close square brackets to the power of italic k italic o italic e italic f end exponent end fraction equals fraction numerator open square brackets O H to the power of minus sign close square brackets squared over denominator open square brackets Zn open parentheses O H close parentheses subscript 4 to the power of 2 minus sign end exponent close square brackets end fraction end style

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