Campuran yang termasuk larutan penyangga adalah ...

Pertanyaan

Campuran yang termasuk larutan penyangga adalah ...space space space

  1. 100 space mL space Na O H thin space 0 comma 1 space M plus 50 space mL space C H subscript 3 C O O H space 0 comma 1 space M space space space

  2. 100 space mL space Na O H thin space 0 comma 1 space M plus 100 space mL space C H subscript 3 C O O H space 0 comma 1 space M space space space

  3. 100 space mL space N H subscript 4 O H thin space 0 comma 1 space M plus 50 space mL space H Cl space 0 comma 1 space M space space space

  4. 100 space mL space N H subscript 4 O H thin space 0 comma 1 space M plus 100 space mL space H Cl space 0 comma 1 space M space space space

  5. 100 space mL space Na O H thin space 0 comma 1 space M plus 50 space mL space H Cl space 0 comma 1 space M space space space

N. Agnia

Master Teacher

Mahasiswa/Alumni Institut Pertanian Bogor

Jawaban terverifikasi

Jawaban

jawabannya adalah C.space space space

Pembahasan

Syarat terbentuknya larutan penyangga melalui reaksi pencampuran asam dan basa adalah:

  • Salah satu pereaksinya adalah asam lemah / basa lemah
  • Jumlah mol pereaksi asam/basa lemah harus lebih besar dari jumlah mol pereaksi asam/basa kuat. Dengan kata lain, pereaksi pembatasnya adalah asam/basa kuat.
  • Pada akhir reaksi tersisa asam lemah / basa lemah dengan garamnya.
     
  1. 100 space mL space Na O H thin space 0 comma 1 space M plus 50 space mL space C H subscript 3 C O O H space 0 comma 1 space M space space space

    space space space space space space space space space space space Na O H space space space space space space plus space space C H subscript 3 C O O H space space space rightwards arrow space space C H subscript 3 C O O Na space plus space space H subscript 2 O space space space 100 space mL cross times 0 comma 1 space M space space space 50 space mL cross times 0 comma 1 space M M space space space space space space 10 space mmol space space space space space space space space space space space space space 5 space mmol space space space space space space space space space space space space space space space space space space space minus sign space space space space space space space space space space space space space space space space minus sign bottom enclose R space space space space space minus sign 5 space mmol space space space space space space space space space space minus sign 5 space mmol space space space space space space space space space space space space plus 5 space mmol space space space space space plus 5 space mmol end enclose S space space space space space space space space 5 space mmol space space space space space space space space space space space space space space space space space space space minus sign space space space space space space space space space space space space space space space space space space 5 space mmol space space space space space space space space space 5 space mmol space  

     
  2. 100 space mL space Na O H thin space 0 comma 1 space M plus 100 space mL space C H subscript 3 C O O H space 0 comma 1 space M space space space

    space space space space space space space space space space space Na O H space space space space space space plus space space C H subscript 3 C O O H space space space space space rightwards arrow space space C H subscript 3 C O O Na space plus space space H subscript 2 O space space space 100 space mL cross times 0 comma 1 space M space space space 100 space mL cross times 0 comma 1 space M M space space space space space space 10 space mmol space space space space space space space space space space space space space 10 space mmol space space space space space space space space space space space space space space space space space space space minus sign space space space space space space space space space space space space space space space space minus sign bottom enclose R space space space minus sign 10 space mmol space space space space space space space space space space minus sign 10 space mmol space space space space space space space space space space plus 10 space mmol space space space plus 10 space mmol end enclose S space space space space space space space space space space space minus sign space space space space space space space space space space space space space space space space space space space space space space space space minus sign space space space space space space space space space space space space space space space space space space space 10 space mmol space space space space space space 10 space mmol space     

     
  3. 100 space mL space N H subscript 4 O H thin space 0 comma 1 space M plus 50 space mL space H Cl space 0 comma 1 space M space space space

    space space space space space space space space space space space N H subscript 4 O H space space space space space space plus space space space space space space space H Cl space space space space space space space space space space rightwards arrow space space N H subscript 4 Cl space space space space space plus space space space space H subscript 2 O space space space 100 space mL cross times 0 comma 1 space M space space space 50 space mL cross times 0 comma 1 space M M space space space space space space 10 space mmol space space space space space space space space space space space space space 5 space mmol space space space space space space space space space space space space space space space space space space space minus sign space space space space space space space space space space space space space space space space minus sign bottom enclose R space space space space space minus sign 5 space mmol space space space space space space space space space space minus sign 5 space mmol space space space space space space space space space space space space plus 5 space mmol space space space space space plus 5 space mmol end enclose S space space space space space space space space 5 space mmol space space space space space space space space space space space space space space space space space space space minus sign space space space space space space space space space space space space space space space space space space 5 space mmol space space space space space space space space space 5 space mmol space  

     
  4. 100 space mL space N H subscript 4 O H thin space 0 comma 1 space M plus 100 space mL space H Cl space 0 comma 1 space M space space space

    space space space space space space space space space space N H subscript 4 O H space space space space space space plus space space space space space space space space H Cl space space space space space space space space space rightwards arrow space space space space space N H subscript 4 Cl space space space space plus space space H subscript 2 O space space space 100 space mL cross times 0 comma 1 space M space space space 100 space mL cross times 0 comma 1 space M M space space space space space space 10 space mmol space space space space space space space space space space space space space 10 space mmol space space space space space space space space space space space space space space space space space space space minus sign space space space space space space space space space space space space space space space space minus sign bottom enclose R space space space minus sign 10 space mmol space space space space space space space space space space minus sign 10 space mmol space space space space space space space space space space plus 10 space mmol space space space plus 10 space mmol end enclose S space space space space space space space space space space space minus sign space space space space space space space space space space space space space space space space space space space space space space space space minus sign space space space space space space space space space space space space space space space space space space space 10 space mmol space space space space space space 10 space mmol space 

Dari keempat reaksi asam basa tersebut, yang hasil akhir reaksinya tersisa basa lemah dan garamnya adalah reaksi 100 space mL space N H subscript 4 O H thin space 0 comma 1 space M plus 50 space mL space H Cl space 0 comma 1 space M. Untuk reaksi antara NaOH dan HCl bukanlah reaksi pembentukan buffer karena keduanya merupakan basa dan asam kuat.


Jadi, jawabannya adalah C.space space space

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