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irinina [24]
3 years ago
14

Phosphorus tribromide decomposes to form phosphorus and bromide, like this:

Chemistry
1 answer:
kenny6666 [7]3 years ago
4 0

Answer:

Kp = 9.3x10⁴

Explanation:

The reaction is this:

4PBr₃ (g)  ⇄  P₄ (g) +  6Br₂ (g)

We define Kp from the partial pressures in equilibrium

PBr₃ →  97.4 atm

P₄ →  99.2 atm

Br₂ → 97.2 atm

Kp = (Partial pressure Br₂)⁶ . (Partial pressure P₄) / (Partial pressure PBr₃)⁴

Kp = 97.2⁶ . 99.2 / 97.4⁴

Kp = 929551.4533

929551.4533 → 9.3x10⁴

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Answer:

643g of methane will there be in the room

Explanation:

To solve this question we must, as first, find the volume of methane after 1h = 3600s. With the volume we can find the moles of methane using PV = nRT -<em>Assuming STP-</em>. With the moles and the molar mass of methane (16g/mol) we can find the mass of methane gas after 1 hour as follows:

<em>Volume Methane:</em>

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<em>Moles methane:</em>

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1atm*900L / 0.082atmL/molK*273.15 = n

n = 40.18mol methane

<em>Mass methane:</em>

40.18 moles * (16g/mol) =

<h3>643g of methane will there be in the room</h3>
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