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vovangra [49]
3 years ago
9

HELP!!! PLEASE!! I don't know this one question!!!

Chemistry
1 answer:
lara31 [8.8K]3 years ago
8 0
Lead(II) Sulfate, the second answer 
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The equilibrium constant k for the synthesis of ammonia is 6.8x105 at 298 k. what will k be for the reaction at 375 k?
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Answer is: K <span>be for the reaction at 375 K is 326.
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T₁<span><span> = 298 K
</span>T</span>₂<span><span> = 375 K
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R = 8,314 J/K</span></span></span>·mol.<span>
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K</span>₂ = ?The van’t Hoff equation: ln(K₂/K₁) = -ΔH/R(1/T₂ - 1/T₁).
ln(K₂/6,8·10⁵) = 92220 J/mol / 8,314 J/K·mol (1/375K - 1/298K).
ln(K₂/6,8·10⁵) = 11092,13 · (0,00266 - 0,00335).
ln(K₂/6,8·10⁵) = -7,64.
K₂/680000= 0,00048
K₂ = 326,4.
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