Kondisi Standar (STP)
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Definisi
Keadaan referensi IUPAC untuk pengukuran gas: 0°C (273,15 K) dan 101,325 kPa (1 atm), di mana satu mol gas ideal menempati volume 22,414 liter.
Penjelasan
Standard conditions allow meaningful comparison of gas volumes and reaction rates across laboratories. One mole of oxygen at STP occupies 22.414 L; at room temperature (25°C, 100 kPa) — the newer IUPAC standard conditions — it occupies 24.789 L, about 10.6% more. Always check which standard a source uses, since older chemistry texts use 0°C while newer ones use 25°C.
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