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Suatu larutan HNO 3 ​ mempunyai pH = 2. Massa yang terdapat dalam 100 ml larutan tersebut adalah....

Suatu larutan  mempunyai pH = 2. Massa undefined yang terdapat dalam 100 ml larutan tersebut adalah....

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Mencari konsentrasi (valensi asam = 1) Mencari mol dari rumus molaritas Mencari massa dari rumus mol

  • Mencari konsentrasi begin mathsize 14px style H N O subscript 3 end style (valensi asam = 1)

    begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row pH equals cell negative sign log open square brackets H to the power of plus sign close square brackets end cell row 2 equals cell negative sign log open square brackets H to the power of plus sign close square brackets end cell row cell open square brackets H to the power of plus sign close square brackets end cell equals cell 1 cross times 10 to the power of negative sign 2 end exponent end cell row cell open square brackets H to the power of plus sign close square brackets end cell equals cell open square brackets H N O subscript 3 close square brackets equals 1 cross times 10 to the power of negative sign 2 end exponent space M end cell end table end style  
     
  • Mencari mol begin mathsize 14px style H N O subscript 3 end style dari rumus molaritas

    begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell open square brackets H N O subscript 3 close square brackets end cell equals cell fraction numerator mol space H N O subscript 3 over denominator Volume space open parentheses L close parentheses end fraction end cell row cell mol space H N O subscript 3 end cell equals cell open square brackets H N O subscript 3 close square brackets cross times Volume open parentheses L close parentheses end cell row blank equals cell 1 cross times 10 to the power of negative sign 2 end exponent space M cross times 0 comma 1 space L end cell row blank equals cell 0 comma 001 space mol end cell end table end style  
     
  • Mencari massa begin mathsize 14px style H N O subscript 3 end style dari rumus mol

    begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell Mr space H N O subscript 3 end cell equals cell Ar space H and Ar space N plus 3 space Ar space O end cell row blank equals cell 1 plus 14 plus 3 left parenthesis 16 right parenthesis end cell row blank equals cell 15 plus 48 end cell row blank equals cell 63 space g forward slash mol end cell end table end style 

    begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell mol space H N O subscript 3 end cell equals cell fraction numerator massa open parentheses g close parentheses over denominator Mr left parenthesis g forward slash mol right parenthesis end fraction end cell row cell massa space H N O subscript 3 end cell equals cell mol space H N O subscript 3 cross times Mr end cell row blank equals cell 0 comma 001 space mol space x space 63 space g forward slash mol end cell row blank equals cell 0 comma 063 space g end cell end table end style 

     

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