A. 36.2cm³
B. 25.7cm³
C. 72.8cm³
D. 24.3cm³
Correct Answer:
Option C – 72.8cm³
Explanation
General formular of Gas laws
(P1V1) ÷ T1 = (P2V2) ÷ T2
P1 = 800mmHg, V1, = 76cm³, T1 = 273 + 27 = 300k
P2 = 760mmHg, V2 = ? T2= 273 + 0 = 273 + 6 = 277k
(800 × 76) ÷ 300 = (760 × V2) ÷ 273
V2 = (300 × 76 × 273) ÷ (300 × 760) = 72.8 cm³
The volume of gas as S.T.P = 72.8 cm³
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