C8 mistakes
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• Pottasium iodide crystals and lead nitrate crystals are on opposite sides of a tank full of water • After 3 minutes a solid lead iodide line was formed in the middle • At a higher temperature the line was formed quicker
• Particle have more kinetic energy • Therefore diffuse faster and meet in the middle sooner
was is meant by a closed system
• Nothing can enter • and nothing can leave the reaction
• CaO • Cr2O3 • MgO • Na2O Best catalyst?
• Cr2O3 • Transition metals make good catalysts
how does pressure effect pos. of eqm
Low pressure • shift on direction with more moles
how is ammonia, nitrogen and hydrogen separted in Haber process
• Cooled • ammonia condenses • hydrogen + nitrogen are gases
haber: where does nitrogen comes from
air
haber: where does hyrgen come from
• water • steam • natural gas • methane
why is the volume collected less than the volume produced
• hydrogen gas escapes • before bung is placed on
why is the yield smaller at higher temp
foreward reaction is exothermic
effect of higher pressure
• more moles on __ • so eqm shifts in counter direction
why not use high pressure
• energy required • risk of explosion increased • requires stringer vessels + thicker walls