Chapter 8 Flashcards
What is a concentrated acid
More acid dissolved in a solution - more hydrogen ions in a set volume
Are hydrogen ions positive or negative
Positive
What’s a dilute acid
Less hydrogen ions in a as volume
What’s a string alkali
More hydroxide ions in a set amount
What charge are hydroxide ions
Negative
What’s a concentrated solution
More solute per unit volume of solvent
How do you work out the concentration
Amount dissolved (solute) (G) divided by volume of solution (dm^-3)
What’s concentration measured in
Gdm^-3
Grans per decimetre (litre) cubed
- minus sign means per dm^3
What’s 1dm^-3 equivalent to
1000cm^3
What’s a base
A chemical of 8-14 PH which is insoluble
How do we test for hydrogen gas
Collect gas and light a splint and release gas and listen for a pop
How do test for carbon dioxide
Blow gas into limewater - will go cloudy of present
How do we test for oxygen
Briefly put out flame collect gas, put splint near flame it should relight