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Jika 3.0625 gram Kalium klorat dipanaskan menghasi...

Jika 3.0625 gram Kalium klorat dipanaskan menghasilkan 0,32 gram gas O subscript 2, maka massa kalium klorat yang tersisa sebanyak ... left parenthesis A subscript italic r space K equals 39 comma space Cl equals 35 comma 5 space O equals 16 right parenthesis 

  1. 0,25 gramspace 

  2. 2,25 gramspace 

  3. 4,25 gramspace 

  4. 6,25 gramspace 

  5. 8,25 gramspace 

Jawaban:

table attributes columnalign right center left columnspacing 0px end attributes row cell 2 K Cl O subscript 3 end cell rightwards arrow cell 2 K Cl and 3 O subscript 2 end cell row blank blank blank row cell mol space O subscript 2 end cell equals cell massa over M subscript italic r equals fraction numerator 0 comma 32 space g over denominator 32 space g forward slash mol end fraction equals 0 comma 01 space mol end cell row cell mol space K Cl O subscript 3 end cell equals cell fraction numerator koef space K Cl O subscript 3 over denominator Koef space O subscript 2 end fraction cross times mol space O subscript 2 end cell row blank equals cell 2 over 3 cross times 0 comma 01 space mol end cell row blank equals cell 0 comma 0066 space mol end cell row blank blank blank row cell massa space K Cl O subscript 3 end cell equals cell mol cross times M subscript italic r end cell row blank equals cell 0 comma 0066 space mol cross times 122 comma 5 space g forward slash mol end cell row blank equals cell 0 comma 8085 space gram end cell row blank blank blank row cell massa space K Cl O subscript 3 space sisa end cell equals cell 3 comma 0625 space g minus sign 0 comma 8085 space g end cell row blank equals cell 2 comma 25 space g end cell end table 


Jadi, jawaban yang benar adalah B.

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