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Pertanyaan

Pada reaksi 100 mL larutan P b left parenthesis N O subscript 3 right parenthesis subscript 2 space 0 comma 4 space M dan 100 mL larutan K subscript 2 C O subscript 3 space 0 comma 4 space M jika K s p space P b C O subscript 3 equals 7 comma 4. space 10 to the power of negative 4 end exponent, massa zat yang mengendap adalah ....

(Ar Pb=207, C=12, O=16, K=39)
 

  1. 56,67 gram

  2. 10,68 gram

  3. 5,34 gram

  4. 2,67 gram

     

  5. 1,068 gram

A. Ratna

Master Teacher

Mahasiswa/Alumni Universitas Negeri Malang

Jawaban terverifikasi

Pembahasan

M o l space P b left parenthesis N O subscript 3 right parenthesis subscript 2 space equals space M space x space V space equals space 0 comma 4 space M space x space 100 space m L space equals space 40 space m m o l space  M o l space K subscript 2 C O subscript 3 space equals space M space x space V space equals space 0 comma 4 space M space x space 100 space m L space equals space 40 space m m o l space    space space space space space space space space space space space space space space space P b left parenthesis N O subscript 3 right parenthesis subscript 2 space left parenthesis a q right parenthesis space space space plus space space space space K subscript 2 C O subscript 3 space left parenthesis a q right parenthesis rightwards arrow P b C O subscript 3 space left parenthesis s right parenthesis space space space space plus space space space 2 space K N O subscript 3 space left parenthesis a q right parenthesis space  M u l a space space space space space space space space space 40 space m m o l space space space space space space space space space space space space space space space space 40 space m m o l space  R e a k s i minus space 40 space m m o l space space space space space space space space space space space space space space minus 40 space m m o l space space space space space space space space plus space 40 space m m o l space space space space space space space space space space space plus 80 space m m o l space  S i s a space space space space space space space space space space 0 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space 0 space space space space space space space space space space space space space space space space space space space space space space space 40 space m m o l space space space space space space space space space space space space space space 80 space m m o l space space space space space    M a s s a space P b C O subscript 3 space equals space m o l space x space M r space equals space 0 comma 04 space m o l space x space space 267 space g divided by m o l space equals space 10 comma 68 space

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Ke dalam 100 mL larutan CaCrO4​0,4M ditambahkan 100 mL larutan AgNO3​0,4M, jika KspAg2​CrO4​=9×10−12, massa zat yang mengendap adalah .... (Ar:O=16,Ca=40,Cr=52,Ag=108,N=14)

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