IB Thermochemistry review

1: negative 2: released

1: negative 2: absorbed

1: positive 2: absorbed

1: positive 2: released

$1072+\left(2\times-296\right)-394$

$-1072-296-394$

$-1072+\left(2\times-394\right)+296$

$\frac{\left(1072-394\right)}{2}+\left(-296\right)$

$38\ kJ$

$-38\ kJ$

$0\ kJ$

$46\ kJ$

enthalpy of formation

enthalpy of atomisation

average bond enthalpy

lattice enthalpy

True

False

True

False

True

False

Standard enthalpy of hydration

Standard enthalpy of solution

Lattice enthalpy

Standard enthalpy of atomisation

Standard enthalpy of hydration

Standard enthalpy of solution

Lattice enthalpy

Standard enthalpy of atomisation

Ca_(s) → Ca²⁺_(g) + 2 e⁻

Ca_(g) → Ca²⁺_(g) + 2 e⁻

Ca⁺_(s) → Ca²⁺_(g) + e⁻

Ca²⁺_(g) + 2 e⁻ → Ca_(s)