When One Mole of Zinc and Two Moles of Hydrochloric $\to$

question 195

Multiple Choice

When one mole of zinc and two moles of hydrochloric acid undergo the reaction Zn(s) + 2 HCl(aq) $\to$ ZnCl₂(aq) + H₂(g) ,150.0 kJ of thermal energy are released at 25.00°C and 1.000 atm.The H₂ gas generated does approximately 2.500 kJ of work on the surroundings as it expands.Calculate $\Delta$ E for the reaction (assume only P-V work is done) .

• A)"+103.3 kJ"
• B)"-145.5"
• C)"-147.5 kJ"
• D)"+152.5 kJ"
• E)"-152.5 kJ"

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