Measuring rate of reaction by collecting gas

What volume of hydrochloric acid should be used?

• 2

• 25

• 50

• 100

What size of measuring cylinder would be most appropriate to measure 50 cm3 of hydrochloric acid?

• 10

• 50

• 100

• 250

When measuring the volume of hydrochloric acid, how should you position yourself?

• Sitting down

• So your eyes are level with the measuring cylinder

• Standing up but leaning forward

• Standing up straight

What is the name of the apparatus that the hydrochloric acid is poured into?

• beaker

• round bottom flask

• conical flask

• pear shaped flask

Are you enjoying the video lesson?

• Yes

• No

Where should the inverted measuring cylinder be clamped?

• So it is toughing the bottom of the water basin

• So it is 1 cm above the bottom of the water basin

• So it is 5 cm above the bottom of the water basin

• So it is on the surface of the water basin

When should the stopwatch be started?

How often should you record the volume of gas produced?

• every second

• every 2 s

• every 5 s

• every 10 s