Pertanyaan

Tentukan persentase kadar masing-masing unsur dalam senyawaberikut. d. Fe ( NO 3 ) 3

Tentukan persentase kadar masing-masing unsur dalam senyawa berikut.

d. $Fe (NO_{3})_{3}$

A. Chandra

Master Teacher

Mahasiswa/Alumni Universitas Negeri Jakarta

Jawaban terverifikasi

Jawaban

% Fe, % N dan % O dalam senyawa berturut-turut adalah 23,14%, 17,36%dan 59,5%.

% Fe, % N dan % O dalam senyawa berturut-turut adalah 23,14%, 17,36% dan 59,5%.

Pembahasan

Diketahui Fe = 56, O = 16, N = 14, sehingga nilai : Menentukan persentase kadar masing-masing unsur: Jadi, % Fe, % N dan % O dalam senyawa berturut-turut adalah 23,14%, 17,36%dan 59,5%.

Diketahui italic A subscript r Fe = 56, O = 16, N = 14, sehingga nilai italic M subscript r space Fe open parentheses N O subscript 3 close parentheses subscript 3 :

Menentukan persentase kadar masing-masing unsur:

$table attributes columnalign right center left columnspacing 0px end attributes row cell percent sign Fe end cell equals cell fraction numerator 1 cross times italic A subscript r space Fe over denominator italic M subscript r space Fe open parentheses N O subscript 3 close parentheses subscript 3 end fraction cross times 100 percent sign end cell row blank equals cell fraction numerator 1 cross times 56 over denominator 242 end fraction cross times 100 percent sign end cell row blank equals cell 56 over 242 cross times 100 percent sign end cell row blank equals cell 23 comma 14 percent sign end cell end table$

$table attributes columnalign right center left columnspacing 0px end attributes row cell percent sign N end cell equals cell fraction numerator 3 cross times italic A subscript r space N over denominator italic M subscript r space Fe open parentheses N O subscript 3 close parentheses subscript 3 end fraction cross times 100 percent sign end cell row blank equals cell fraction numerator 3 cross times 14 over denominator 242 end fraction cross times 100 percent sign end cell row blank equals cell 42 over 242 cross times 100 percent sign end cell row blank equals cell 17 comma 36 percent sign end cell end table$

$table attributes columnalign right center left columnspacing 0px end attributes row cell percent sign O end cell equals cell fraction numerator 9 cross times italic A subscript r space O over denominator italic M subscript r space Fe open parentheses N O subscript 3 close parentheses subscript 3 end fraction cross times 100 percent sign end cell row blank equals cell fraction numerator 9 cross times 16 over denominator 242 end fraction cross times 100 percent sign end cell row blank equals cell 144 over 242 cross times 100 percent sign end cell row blank equals cell 59 comma 5 percent sign end cell end table$

Jadi, % Fe, % N dan % O dalam senyawa berturut-turut adalah 23,14%, 17,36% dan 59,5%.