Calculate for The Following Reaction at 775k 2hg O2 Hgo
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This calculator helps you analyze the reaction of 2Hg + O2 at 775K. Understand the stoichiometry, enthalpy change, and resulting products with our step-by-step guide and interactive tool.
Reaction Basics
The reaction between mercury (Hg) and oxygen (O2) at 775K produces mercury(II) oxide (HgO). This is a common oxidation reaction that occurs when mercury vapor reacts with atmospheric oxygen.
Reaction Formula
2Hg + O₂ → 2HgO
Key Characteristics
- Type: Combustion reaction
- State: Gas phase at 775K
- Products: Mercury(II) oxide (HgO)
- Enthalpy change: Exothermic
Stoichiometry
Stoichiometry helps us understand the quantitative relationships between reactants and products in the reaction.
Stoichiometric Coefficients
2Hg + 1O₂ → 2HgO
Mole Ratios
- 2 moles of Hg react with 1 mole of O₂ to produce 2 moles of HgO
- The reaction is balanced with a 2:1:2 mole ratio
Important Note
The actual reaction may occur at different rates depending on temperature and pressure conditions.
Enthalpy Change
The reaction is exothermic, meaning it releases heat to the surroundings. The enthalpy change (ΔH) is negative for this reaction.
Enthalpy Change Formula
ΔH = -[ΔHf(HgO) - ΔHf(Hg) - 0.5ΔHf(O₂)]
Typical Values
- ΔHf(HgO) = -90.8 kJ/mol
- ΔHf(Hg) = 0 kJ/mol (reference state)
- ΔHf(O₂) = 0 kJ/mol (reference state)
- Calculated ΔH ≈ -90.8 kJ/mol
Reaction Products
The primary product of this reaction is mercury(II) oxide (HgO), which is a white crystalline solid at room temperature.
Properties of HgO
- Appearance: White powder
- Melting point: 462°C
- Boiling point: 900°C
- Solubility: Insoluble in water
Safety Note
Mercury compounds are toxic. Proper handling procedures must be followed when working with HgO.
Practical Applications
This reaction has several important applications in industry and research:
- Manufacture of mercury-based catalysts
- Production of mercury-containing pigments
- Research in high-temperature chemistry
- Environmental monitoring of mercury emissions
Industrial Considerations
At 775K, the reaction occurs at a moderate rate. Industrial processes typically use higher temperatures or catalysts to optimize production.
Frequently Asked Questions
What is the balanced equation for this reaction?
The balanced equation is: 2Hg + O₂ → 2HgO
Is this reaction exothermic or endothermic?
The reaction is exothermic, releasing heat to the surroundings.
What are the main products of this reaction?
The main product is mercury(II) oxide (HgO).
What safety precautions should be taken with HgO?
Mercury compounds are toxic. Proper handling procedures and personal protective equipment must be used.