Chemistry – Experimental techniques and chemical analysis - Experimental design | e-Consult

Source of Error 1: Temperature Fluctuations

Description: Changes in temperature can affect the pressure of the gas in the syringe. As temperature increases, pressure increases, leading to inaccurate volume readings.

Minimisation: Ensure the gas syringe and the gas collection tube are at a constant temperature throughout the experiment. This can be achieved by using a water bath to maintain a consistent temperature.

Source of Error 2: Imperfect Seal

Description: If the connection between the gas collection tube and the gas syringe is not airtight, gas can escape, leading to an underestimation of the volume produced.

Minimisation: Ensure a tight and secure connection between all components of the apparatus. Use appropriate connectors and check for leaks before starting the experiment. A small amount of oil can be used to help seal the connections.