Lead Displacing Silver from Silver Nitrate
Pb + 2AgNO3 → Pb(NO3)2 + 2Ag
Visão geral
Lead metal displaces silver from silver nitrate solution, demonstrating that lead is more reactive than silver. Silver crystals deposit on the lead surface as shiny metallic needles. This was historically used in silver assaying and recovery processes.
Participantes
| Papel | Substância | Coeficiente | Estado |
|---|---|---|---|
| Reagente | Lead Pb | 1 | (s) |
| Reagente | Silver Nitrate AgNO₃ | 2 | (aq) |
| Produto | Silver Ag | 2 | (s) |
Exemplo do cotidiano
Jewelers and assayers historically used lead to test silver purity, exploiting the differences in metal reactivity.
Importância industrial
A cementação com chumbo foi usada nos processos históricos de refinação de prata. A compreensão do deslocamento de metais é essencial para conceber células electroquímicas e processos hidrometalúrgicos.
Propriedades
- Tipo
- Single Replacement
- Reversível
- Não
- Energia
- Exotérmico
- ΔH
- -132,0 kJ/mol
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Copper Displacing Silver from Silver Nitrate
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Frequently Asked Questions
What is the equation for Lead Displacing Silver from Silver Nitrate?
The balanced equation is: Pb + 2AgNO₃ → Pb(NO₃)₂ + 2Ag.
What type of reaction is Lead Displacing Silver from Silver Nitrate?
Lead Displacing Silver from Silver Nitrate is a single replacement reaction.
Is Lead Displacing Silver from Silver Nitrate exothermic or endothermic?
Lead Displacing Silver from Silver Nitrate is exothermic (releases energy). The enthalpy change (ΔH) is -132.0 kJ/mol.