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What is the key difference between water gas and producer gas, and what is water gas’s main reaction?

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1. What is the key difference between water gas and producer gas, and what is water gas’s main reaction?

Water gas uses steam over hot coke (C + H2O → CO + H2); producer gas uses limited air

Water gas uses limited air over hot coke; producer gas uses steam (C + H2O → CO + H2)

Both use the same reactant, but at different temperatures

Water gas is made from petroleum; producer gas is made from coal

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