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Selina solutions
Grade 9 
Chemistry
Selina Solutions CONCISE subject class 9-ICSE-Chemistry
Chapter 7 Study Of Gas Laws
Number Problems
Question 24
Chemistry
Selina Solutions CONCISE subject class 9-ICSE-Chemistry
Chapter 7 Study Of Gas Laws
Number Problems
Question 24
Chapter 7 Study Of Gas Laws | Number Problems
Question 24
CHAPTERS
50 cm3 of hydrogen is collected over water at 17°C and 750 mm Hg pressure. Calculate the volume of dry gas at S.T.P. The water vapor pressure at 17°C is 14 mm Hg.
V1 = V1
P1 = 760 atm
T1 = 273 K
V2 = 2V1
T2 =?
P2 = 50/100 x 760 = 380
P1V1/T1 = P2V2/T2
760 x V1/273 = 380 x 2V1/T2
T2 = 273 K
Question 24
50 cm3 of hydrogen is collected over water at 17°C and 750 mm Hg pressure. Calculate the volume of dry gas at S.T.P. The water vapor pressure at 17°C is 14 mm Hg.
V1 = V1
P1 = 760 atm
T1 = 273 K
V2 = 2V1
T2 =?
P2 = 50/100 x 760 = 380
P1V1/T1 = P2V2/T2
760 x V1/273 = 380 x 2V1/T2
T2 = 273 K
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