Calcolatore Energia Libera di Gibbs

Calcola l'energia libera di Gibbs per determinare la spontaneità di una reazione.

g
J/(g·K)
K

Heat (q)

2,092.0 J

Heat2.092 kJ

Heat (q) vs Mass of Solution/Substance

Formula

## Calorimetry ### Formula **q = m × c × ΔT** Where: - **q** = heat absorbed or released (J) - **m** = mass (g) - **c** = specific heat capacity (J/(g·K)) - **ΔT** = temperature change (K or °C) Positive q means heat absorbed (endothermic). Negative q means heat released (exothermic).

Esempio Risolto

100 g of water (c = 4.184 J/(g·K)) rises by 5 K.

  1. 01q = m × c × ΔT
  2. 02q = 100 × 4.184 × 5
  3. 03q = 2092 J
  4. 04q = 2.092 kJ

Domande Frequenti

What is calorimetry?

Calorimetry is the measurement of heat changes during chemical or physical processes using a device called a calorimeter.

Why use water in a calorimeter?

Water has a high specific heat (4.184 J/(g·K)), making it good at absorbing heat. Its properties are also well characterized.

What is the difference between q and ΔH?

At constant pressure, q = ΔH. In a bomb calorimeter (constant volume), q = ΔU (internal energy change), which differs slightly from ΔH.

Impara

Understanding Molarity

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