while heating Lead Nitrate the brown fumes emitted is
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when lead nitrate is heated the products evolved are :
2PB(NO3)2 ---------------> 2PBO + 4NO2 + 02
THE BROWN FUMES THAT IS EMITTED IS NITROGEN DIOXIDE , ALONG WITH IT OXYGEN IS ALSO RELEASED BUT IT CANNOT BE SEEN.
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While heating Lead Nitrate the brown fumes emitted is Nitrogen dioxide.
Explanation:
- When Lead Nitrate is heated at high temperature it decomposes into smaller compounds.
- The compounds that are formed are lead oxide, nitrogen dioxide and oxygen.
- Lead oxide is a dirty white compound which settles in the ‘bottom of the test tube’, nitrogen dioxide gas evolved from the test tube producing a brown fumes.
- The presence of oxygen can be detected by introducing a burning splinter which when comes in contact with oxygen bursts into flames.
Learn more about Nitrogen dioxide
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