A sealed plastic syringe was connected to a pressure sensor and data logger

CHEMISTRY · Multi-part · IB Diploma Programme · Chemistry · Ideal gases · Ideal gases

Problem

A sealed plastic syringe was connected to a pressure sensor and data logger. The following results were obtained at constant temperature.

Volume of air in gas syringe / $\text{cm}^3$	Pressure / $\text{kPa}$
$20$	$101.7$
$18$	$115.0$
$16$	$128.0$
$14$	$147.0$
$12$	$168.0$
$10$	$196.0$
$8$	$246.0$

(1) Plot pressure (y-axis) against volume (x-axis). (2) Describe the relationship between the two variables and explain it using the kinetic molecular theory. (3) Explain why the temperature needs to be kept constant.

Related theory

Gaseous State
States of Matter
Boyle's law

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