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Pertanyaan

2,14 gram amonium klorida dilarutkan dalam air hingga volume larutannya 200 mL. Jika Kb NH 3 ​ = 2 x 1 0 − 5 maka [ OH − ] yang terkandung dalam larutan garam tersebut adalah ....

2,14 gram amonium klorida dilarutkan dalam air hingga volume larutannya 200 mL. Jika  maka  yang terkandung dalam larutan garam tersebut adalah ....

  1. begin mathsize 14px style 10 to the power of negative sign 9 end exponent space mol forward slash L end style 

  2. begin mathsize 14px style 10 to the power of negative sign 3 end exponent space mol forward slash L end style 

  3. begin mathsize 14px style 10 to the power of negative sign 3 end exponent space mol forward slash L end style

  4. begin mathsize 14px style 10 to the power of negative sign 7 end exponent space mol forward slash L end style 

  5. begin mathsize 14px style 10 to the power of negative sign 2 end exponent space mol forward slash L end style 

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G. Suprobo

Master Teacher

Mahasiswa/Alumni Institut Pertanian Bogor

Jawaban terverifikasi

Jawaban

jawaban yang benar adalah A.

jawaban yang benar adalah A.

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Pembahasan

Konsentrasi ion adalah mol/L. Jadi, jawaban yang benar adalah A.

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell mol space N H subscript 4 Cl end cell equals cell fraction numerator massa over denominator Mr space N H subscript 4 Cl end fraction end cell row blank equals cell fraction numerator 2 comma 14 space g over denominator 53 comma 5 space g forward slash mol end fraction end cell row blank equals cell 0 comma 04 space mol end cell end table end style 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row M equals cell mol over volume end cell row blank equals cell fraction numerator 0 comma 04 space mol over denominator 0 comma 2 space L end fraction end cell row blank equals cell 0 comma 2 space M end cell end table end style

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell open square brackets H to the power of plus sign close square brackets end cell equals cell square root of Kw over Kb end root x space M end cell row blank equals cell square root of fraction numerator 1 x 10 to the power of negative sign 14 end exponent over denominator 2 x 10 to the power of negative sign 5 end exponent end fraction space x space left parenthesis 2 x 10 to the power of negative sign 1 end exponent space right parenthesis 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 end cell row Kw equals cell open square brackets H to the power of plus sign close square brackets x open square brackets O H to the power of minus sign close square brackets end cell row cell 10 to the power of negative sign 14 end exponent end cell equals cell 10 to the power of negative sign 5 end exponent space x space open square brackets O H to the power of minus sign close square brackets end cell row cell space open square brackets O H to the power of minus sign close square brackets end cell equals cell 10 to the power of negative sign 9 end exponent end cell row blank blank blank end table end style

Konsentrasi ion begin mathsize 14px style open parentheses O H to the power of minus sign close parentheses end style adalah begin mathsize 14px style 10 to the power of negative sign 9 end exponent end style mol/L.

Jadi, jawaban yang benar adalah A.

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Konsep Kilat

Pendahuluan Hidrolisis Garam

Hidrolisis Parsial Garam Asam

Hidrolisis Parsial Garam Basa

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