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Diketahui larutan 0,1 M NH4​Cl  dan Kb​ NH4​OH=10−5. Tuliskan hidrolisis garam NH4​CI! Hitung harga PH larutan!

Pertanyaan

Diketahui larutan 0,1 M N H subscript 4 Cl  dan K subscript b space N H subscript 4 O H equals 10 to the power of negative sign 5 end exponent.

  • Tuliskan hidrolisis garam N H subscript bold 4 C I!
  • Hitung harga PH larutan!

Y. Sahara

Master Teacher

Mahasiswa/Alumni Universitas Negeri Malang

Jawaban terverifikasi

Pembahasan

Garam N H subscript 4 Cl merupakan garam hidrolisis parsial yang terbentuk dari asam kuat dan basa lemah. Kation dari basa lemah lah yang hanya mengalami reaksi hidrolisis. Garam N H subscript 4 Cl merupakan garam yang bersifat asam.

Reaksi hidrolisis larutan garam N H subscript 4 Cl adalah:

N H subscript 4 Cl space rightwards arrow space N H subscript 4 to the power of plus sign space plus space Cl to the power of minus sign N H subscript 4 to the power of plus plus H subscript 2 O equilibrium N H subscript 4 O H and H to the power of plus sign Cl to the power of minus sign space plus space H subscript 2 O space rightwards arrow space tidak space terhidrolisis 
pH larutan hirolisis garam N H subscript 4 Cl adalah:
table attributes columnalign right center left columnspacing 0px end attributes row cell K subscript b end cell equals cell 10 to the power of negative sign 5 end exponent end cell row cell M space garam end cell equals cell 0 comma 1 space M end cell row cell M space kation space garam space end cell equals cell M space garam end cell row cell open square brackets H to the power of plus sign close square brackets end cell equals cell square root of K subscript w over K subscript b cross times M space kation space garam end root end cell row blank equals cell square root of 10 to the power of negative sign 14 end exponent over 10 to the power of negative sign 5 end exponent cross times 0 comma 1 space M end root end cell row blank equals cell square root of 10 to the power of negative sign 10 end exponent end root end cell row blank equals cell 10 to the power of negative sign 5 end exponent space M end cell row blank blank blank row pH equals cell negative sign log space H to the power of plus sign end cell row blank equals cell negative sign log space 10 to the power of negative sign 5 end exponent end cell row blank equals 5 end table  


Jadi, reaksi hidrolisis garamn N H subscript 4 Cl adalah

N H subscript 4 Cl space rightwards arrow space N H subscript 4 to the power of plus sign space plus space Cl to the power of minus sign N H subscript 4 to the power of plus plus H subscript 2 O equilibrium N H subscript 4 O H and H to the power of plus sign Cl to the power of minus sign space plus space H subscript 2 O space rightwards arrow space tidak space terhidrolisis
dan pH larutannya adalah 5.

1rb+

5.0 (2 rating)

Pertanyaan serupa

Larutan 50 ml HCI 0,2 M ditambah 50 ml larutan NH3​ 0,2 M (Kb=1×10−5) sesuai dengan reaksi:   HCl(aq)+NH3​(aq)→NH4​Cl(aq)+H2​O(l)    pH larutan yang terjadi adalah....

110

5.0

Jawaban terverifikasi

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