Dry hydrogen is trapped by pellet of mercury in a uniform capillary tube closed at one end. If the length of the column of hydrogen at 27°C is 1.0m, at what temperature will the length be 1.20m?

Dry hydrogen is trapped by pellet of mercury in a uniform capillary tube closed at one end. If the length of the column of hydrogen at 27°C is 1.0m, at what temperature will the length be 1.20m?

A 22.5^oC
B 32.4^oC
C 77.0^oC
D 87.0^oC
E 360.0^oC

waec 1990 physics

The correct answer is D. 87.0^oC

V₁/T₁ = V₂/T₂

1.0/(273 + 27) = 120/T₂

T₂ = 360K = 87

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