Question

How to know what is the sign of entalpy change for a given reaction?

Answer 1

$\mathbb{\red{\huge{Hey\:mate}}}$☺️
$\boxed{Here\:is\:your\:@nswer}$
━━━━━━━━━━━━━━━━━━━$\mathfrak{\green{Answer.}}$Use the formula ∆H = m x s x ∆T to solve. Once you have m, the mass of your reactants, s, the specific heat of your product, and ∆T, the temperaturechange from your reaction, you are prepared to find the enthalpy of reaction. Simply plug your values into the formula ∆H = m x s x ∆T and multiply to solve.
━━━━━━━━━━━━━━━━━━━
$\huge{\bf{ \orange {\fbox{\underline{ \color{blue}{Follow\: Me}}}}}}$