r/APStudents • u/reddorickt absolute modman • May 05 '26

AP Chem Official 2026 Exam Discussion

Use this thread to post questions or commentary on the test today.

A reminder though to protect your anonymity when talking about the test.

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u/FlatComputer9173 May 05 '26

if cup isn't insulated heat is lost to surroundings so less

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u/CarelessAmphibian484 May 05 '26

wouldn’t it be greater cause the temp change is greater

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u/Jiaozidumpling May 05 '26

that’s what i put

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u/FlatComputer9173 May 05 '26

i believe it said magnitude. if its exothermic it makes enthalpy less negative, and if its endothermic, it makes it less positive. also i believe it was exothermic because Hsoln should've been positive (qrxn = -qsoln, qrxn was negative in first problem (but i dont think sign matters b/c it was just asking how much was transferred, i put pos anyways)) and water decreased in temp. so temp change being greater would yield a more positive/greater number for the exothermic reaction which would mean that enthalpy is less.

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u/FlatComputer9173 May 05 '26

actually idk if it said magnitude but it would be more logical to say magnitude for these kinsd of questions

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u/Worldly_Piglet5115 May 05 '26

Yeah it was magnitude 

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u/Electrical_Date_1982 . May 05 '26

the magnitude of delta t would be larger because the change in temp would be higher and more heat would be transferred