Element atomlarining boshqa elementlarning muayyan sondagi atomlarini biriktirib olish xususiyati

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35
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56
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84
++++++++++++++++++++++++++++++++++++++
C6H5CH2OH+KMnO4 + H2SO4→Oksidlanish-qaytarilish reaksiyasini
tugallang hamda chap tomondagi koeffitsiyentlar yig‘indisini aniqlang.
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17
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20
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# 15
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22
++++++++++++++++++++++++++++++++++++

CH3-CO-CH3 + K2Cr2O7 + H2SO4→HCOOH +CH3COOH + ..+…+H2O

Oksidlanish-qaytarilish reaksiyasini tugallang hamda chap tomondagi
koeffitsiyentlar yig‘indisini aniqlang.
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18
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# 6
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12
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8
++++++++++++++++++++++++++++++++++++
Quyidagi reaksiyani tugallang va tenglang. Kislorod tutgan molecular tuzilishli moddalar oldidagi koeffitsiyentlar yig‘inidisini toping.
CuS+ HNO₃ →Cu(NO₃)₂ + S +NO+ H₂O
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# 14
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20
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23
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17
+++++++++++++++++++++++++++++++++++
Quyidagi reaksiyani tugallang va tenglang. Molekular tuzilishli moddalar oldidagi koeffitsiyentlar yig‘indisini toping.
2NaNO₃ + 6FeSO₄ + 4H₂SO₄ →Na2SO4 + 3Fe₂(SO4)₃ + 2NO + 4H₂0
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9
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12
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# 10