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Sagot :
The initial weight of mercury oxide in the sample was 59.1 g HgO.
Steps
chemical reaction
2HgO ⟶ 2Hg + O₂
the moles of O₂
pV = nRT
n = (pV)/(RT)
Data:
p = 0.970 atm
V = 4.50 L
R = 0.082 06 L·atm·K⁻¹mol⁻¹
T = 390.0 K
Calculation:
n = (0.970 × 4.500)/(0.082 06 × 390.0)
n = 0.1364 mol O₂
the moles of HgO
The molar ratio is 1 mol O₂/2 mol HgO.
Moles of HgO = 0.1364 mol O₂ × (2 mol Hg/1 mol O₂)
Moles of HgO = 0.2728 mol HgO
the mass of HgO
Mass of HgO = 0.2728 mol HgO × (216.59 g HgO/1 mol HgO)
Mass of HgO = 59.1 g HgO
What is the name of HgO?
For the creation of various organic mercury compounds and specific inorganic mercury salts, mercury(II) oxide, or HgO, serves as a source of elemental mercury.
This red or yellow crystalline substance is also utilised in mercury batteries and zinc-mercuric oxide electric cells as an electrode (combined with graphite).
What is the purpose of mercury oxide?
Mercuric oxide is a colourless, crystalline powder that ranges from yellow to orange-yellow.
It serves as a seed protectant, a pigment, a preservative, and an ingredient in alkaline batteries and cosmetics.
Is there a combination of mercury oxide?
- The powder form of mercury oxide is dark black or dark brown.
- An intimate blend of metallic mercury and mercuric oxide rather than a genuine compound.
learn more about mercury oxide here
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