# 800 Cm3 of Gas is Collected at 650 Mm Pressure. at What Pressure Would the Volume of the Gas Reduce by 40% of Its Original Volume, Temperature Remaining Constant? - Chemistry

Numerical

800 cm3 of gas is collected at 650 mm pressure. At what pressure would the volume of the gas reduce by 40% of its original volume, the temperature remaining constant?

#### Solution

Given:
V = 800 cm3

P = 654 m

P1= ?

V1 = reduced volume = 40% of 800

= (80 xx 40)/100 = 320

Net V1 = 800 - 320 = 480 cm3

T = T1

Using the gas equation,

"PV"/"T" = ("P"_1 "V"_1)/"T"_1

(800 xx 654)/"T" = ("P"_1 xx 480)/"T"_1

Since T = T1

"P"_1 = (800 xx 654)/480 = 1090 mm of Hg.

Concept: Standard Temperature Pressure (S.T.P.)
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#### APPEARS IN

Selina Concise Science Chemistry 1 Class 9 ICSE
Chapter 7 Study of Gas Laws
Exercise 7 (B) | Q 4 | Page 126