N2h4 → n2. Cr2 so 3. So2+koh. Cr2(so4)3 = cr. Cr+3 cr+6 овр.
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Cr2 so 3. Cr2so43 + na2s. Cr2(so4)3. Cr cr2so43 k2cr2o7. Cr2so43 h2o2.
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Cr cro cr2o3 h2cr04. Cr2o3 cl2 koh. Cro h2so4 конц. K2cr07+h2o. Cr2 so 3.
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Cr2 so 3. Cr2 so 3. Cr2o3 h2so4. Cr2 (so4)3 +naoh овр. K2cr2o7 koh ki.
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Cr2o3 koh h2so4. Na2so4 уравнение реакции. Cr(oh)3+h2s. Cr02 h2s. H2so4+k2cr2o7+h2so4.
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Cr2o3+o2+koh. Cr2 so 3. Cr2 so4 3 степень окисления. Cr2 so 3. Cr2 so 3.
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Cr2 so4 3 koh. Cr2(so4)3 + naoh. Cr2o3 h2o2 koh. Cr2o3 koh kcl h2o. Cr2 so 3.
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H2so4 конц + na2cr2o7. P2o5 овр. Cr2 so 3. Kclo cr2o3 koh. Cr+3 = cro4.
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Cr3 so4 3. Cr2(so4)3 + naoh. Cr2 so 3. Cr2(so4)3. Cr2 so 3.
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K2cr2o7 ki h2so4 овр. Hso3. Cr2 so 3. Cr2 so 3. Степень окисления cr + o2 - cr2o3.
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Hg2cl2 ячейка. Na2so3 na2s na2so4 овр. Cr2 so 3. N2h4 h2so4. H2o2 cr2o3 koh k2cro4 h2o.
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Восстановитель окислитель 2h2+o2. Cr2s3 o2. Cr2 so 3. Cr2 so 3. Cr03+h2o.
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Cr2so43 h2o2 koh. Cr2 so 3. Cr2so43 цвет. Cr2 so 3. Cr2(so4)3.
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K2cr2o7 цвет. Nano2 h2so4 овр. Cr2 so 3. K2cro4+h2so4->cro3. Cr2o7 2- cr3+.
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H2so4+k2cr2o7+h2so4. Cr2 so 3. Hso3. Cr2 so 3. Cr2 so 3.
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Cr2(so4)3. Hg2cl2 ячейка. Cr2 so 3. Cr2 so 3. Cr2o3+o2+koh.
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Cr+3 cr+6 овр. Cr2(so4)3 + naoh. Cr2(so4)3 = cr. Cro h2so4 конц. Cr2o3 koh kcl h2o.
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Cro h2so4 конц. K2cr2o7 koh ki. Cr02 h2s. Cr2 so 3. Cr2so43 h2o2.
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Cr2o3 koh kcl h2o. Cr2 so 3. So2+koh. Cr2 so 3. Cr2(so4)3 + naoh.
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Cr2o3+o2+koh. Cr2 so 3. Cr2 so 3. P2o5 овр. Cr2(so4)3 = cr.
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