tentukan bilangan redoks dari Cr2O3 + KClO3

<p>Jawaban yang benar adalah biloks Cr = +3, biloks O = -2, biloks K = +1, biloks Cl = +5</p><p>&nbsp;</p><p>Pembahasan</p><p>Mungkin yang dimaksud adalah bilangan oksidasi.&nbsp;</p><p>Bilangan oksidasi adalah muatan posisitf atatu negatif suatu atom ketika melepaskan atau menerima elektron</p><p>&nbsp;</p><p>Penentuan bilangan oksidasi (biloks)</p><p>a. Unsur bebas = 0</p><p>b. Jumlah bilangan oksidasi senyawa = 0</p><p>c. O = -2, kecuali dalam peroksida, biloks O = -1</p><p>d. bilangan oksidasi Golongan IA = +1</p><p>&nbsp;</p><p>Cr2O3</p><p>2 x biloks Cr + 3 x biloks O = 0</p><p>2 x biloks Cr + 3 x (-2) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 0</p><p>2 x biloks Cr + (-6) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 0</p><p>2 x biloks Cr &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= +6</p><p>biloks Cr &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = +6/2</p><p>biloks Cr &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = +3</p><p>&nbsp;</p><p>KClO3</p><p>biloks K + biloks Cl + 3 x biloks O = 0</p><p>+1 + biloks Cl + 3 x (-2) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 0</p><p>+1 + biloks Cl + (-6) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 0</p><p>biloks Cl &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= +6 -1</p><p>biloks Cl &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= +5</p><p>&nbsp;</p><p>Maka biloks Cr = +3, biloks O = -2, biloks K = +1, biloks Cl = +5</p>