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कॉपर की क्रिया तनु व सान्द्र `"HNO"_(3)` से होती है |

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कॉपर की क्रिया तनु व सान्द्र `"HNO"_(3)` से होती है |
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`3"Cu"+"8HNO"_(3)to 3"Cu"("NO"_(3))_(2)+2"NO"+4"H"_(2)"O"`
`"Cu"+"4HNO"_(3)to "Cu"("NO"_(3))_(2)+"2NO"_(2)+2"H"_(2)"O"`
`2:1` में NO तथा `"NO"_(2)` प्राप्त करने के लिए -
`7"Cu"+"20HNO"_(3)to 7"Cu"("NO"_(3))_(2)+4"NO"+2"NO"_(2)+"10H"_(2)"O"`
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