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P a d a p e mana s an k r i s t a l t er u s i ( C u S O 4 ​ . × H 2 ​ O ) t e d a d i p e n gu r an g an ma ss a d a r i 24 , 90 g r am m e nja d i 15 , 90 g r am ses u ai re ak s i : C u S O 4 ​ . × H 2 ​ O ( s ) → C u S O 4 ​ ( S ) × H 2 ​ O ( g ) R u m u s k r i s t a l t er u s i t erse b u t a d a l ah .... ( A r C u = 63 ; S = 32 ; 0 = 16 , H = 1 )

  1. C u S O subscript 4.5 space H subscript 2 O

  2. C u S O subscript 4.4 space H subscript 2 O space

  3. C u S O subscript 4. space H subscript 2 O space

  4. C u S O subscript 4.3 space H subscript 2 O space

  5. C u S O subscript 4.2 space H subscript 2 O space

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D. Ayu

Master Teacher

Mahasiswa/Alumni Universitas Negeri Jakarta

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Pembahasan

stack C u S O subscript 4 with 24 comma 90 space g r a m below. cross times H subscript 2 O space left parenthesis s right parenthesis space rightwards arrow space stack C u S O subscript 4 with 15 comma 90 space g r a m below space left parenthesis s right parenthesis space plus space x space H subscript 2 O space left parenthesis g right parenthesis space  M a k a space m a s s a space x space H subscript 2 O space a d a l a h space 24 comma 90 space g r a m space – space 15 comma 90 space g r a m space equals space 9 comma 00 space g r a m. space  U n t u k space m e n g e t a h u i space x comma space d i m a n a space x space a d a l a h space m o l space d a r i space H subscript 2 O space m a k a space m e n g g u n a k a n space p e r b a n d i n g a n space  x equals space space fraction numerator m o l space H 2 O over denominator m o l space C u S O 4 end fraction space space  m o l space H subscript 2 O space equals space fraction numerator g r space H 2 O over denominator M r space H 2 O end fraction equals space space fraction numerator 9 space g r a m over denominator 18 end fraction equals 0 comma 5 space m o l space space  m o l space C u S O subscript 4 fraction numerator g r space C u S O 4 over denominator M r space C u S O 4 end fraction equals space space fraction numerator 15 comma 9 space g r a m over denominator 159 end fraction equals 0 comma 1 space m o l space space  J a d i comma space space x equals space space fraction numerator m o l space H 2 O over denominator m o l space C u S O 4 end fraction space equals space fraction numerator 0 comma 5 space m o l over denominator 0 comma 1 space m o l end fraction space equals space 5

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