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Kimia X SMA 103<br />

PV = nRT<br />

dengan: P = tekanan (atm)<br />

V = volume gas (liter)<br />

n = jumlah mol (mol)<br />

R = tetapan gas = 0,082 L atm/mol K<br />

T = 0 °C = 273 K<br />

V = nRT<br />

P<br />

= 1 mol × 0,082 L atm/mol K × 273K<br />

1 atm<br />

= 22,4 liter<br />

Jadi, pada keadaan standar (STP), volume molar (volume 1 mol gas)<br />

adalah 22,4 liter/mol.<br />

2 Keadaan Kamar<br />

Kondisi pengukuran gas pada suhu 25 °C dan tekanan 1 atm disebut<br />

keadaan kamar dan dinyatakan dengan RTP (Room Temperature and<br />

Pressure).<br />

PV = nRT<br />

dengan: P = tekanan (atm)<br />

V = volume gas (liter)<br />

n = jumlah mol (mol)<br />

R = tetapan gas = 0,082 L atm/mol K<br />

T = 0 °C = 298 K<br />

V = nRT<br />

P<br />

= 1 mol × 0,082 L atm/mol K × 298 K<br />

1 atm<br />

= 24,4 liter<br />

Jadi, pada keadaan kamar (RTP), volume molar (volume 1 mol gas)<br />

adalah 24,4 liter/mol.

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