define upward delivery and downwards delivery
Answers
Answered by
5
Upwards delivery
The method for preparing and collecting a gas less dense (lighter) than air by heating solid reactants. The less-dense gas extends into, and displaces, the more dense air downwards. This method of gas preparation is called upward delivery or displacement.
Downward delivery
The method for preparing and collecting a gas less dense (lighter) than air by heating solid reactants. The less-dense gas extends into, and displaces, the more dense air downwards. ... Hydrogen chloride gas is collected by the downward delivery (upward displacement of air) as it is 1.28 times heavier than air.
Similar questions