Cân bằng pthh 1, CuS2+HNO3→Cu(NO3)2+H2SO4+N2O+H2O 2,K2Cr2O7+KI+H2SO4→Cr2(SO4)3+I2+K2SO4+H2O 3,K2Cr2O7+KNO2+H2SO4→Cr2(SO4)3+KNO3+K2SO4+H2O

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Cân bằng pthh
1, CuS2+HNO3→Cu(NO3)2+H2SO4+N2O+H2O
2,K2Cr2O7+KI+H2SO4→Cr2(SO4)3+I2+K2SO4+H2O
3,K2Cr2O7+KNO2+H2SO4→Cr2(SO4)3+KNO3+K2SO4+H2O

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Aaliyah 2 tháng 2021-09-27T12:31:15+00:00 2 Answers 84 views 0

Answers ( )

    0
    2021-09-27T12:32:16+00:00

    Đáp án:

    4CuS2 + 22HNO3 → 4Cu(NO3)2+ 8H2SO4+ 7N2O+ 3H2O

    K2Cr2O7 + 6KI + 7H2SO4 → Cr2(SO4)3+ 3I2 + 4K2SO4 + 7H2O

    K2Cr2O7 + 3KNO2 + 4H2SO4 → Cr2(SO4)3 + 3KNO3 + K2SO4 + 4H2O

     

     

    0
    2021-09-27T12:32:49+00:00

    1,22HNO3+4CuS2→4Cu(NO3)2+3H2O+8H2SO4+7N2O

    2,7H2SO4+K2Cr2O7+6KI→7H2O+3I2+4K2SO4+Cr2(SO4)3

    3,4H2SO4+K2Cr2O7+3KNO2→4H2O+3KNO3+K2SO4+Cr2(SO4)3

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