Question

Reactions that are exothermic have ΔHf values that are________

positive or negative?

Answer 1

@touseii45

Answer 2

@thomaster

Answer 3

\[reactants \rightarrow product~(ΔH > 0)\]
also written as
\[reactants \rightarrow products - energy\]

Answer 4

that when its endothermic

Answer 5

with exothermic \[reactants \rightarrow products~(ΔH < 0)\] also written as \[reactants \rightarrow products + energy\]

Answer 6

so it would be positive?

Answer 7

no since the question is asking for exothermic ΔH is less than 0 making it ?

Answer 8

ah. true. thanks

Answer 9

Welcome ^-^