chem sac

What is unique to acids?
- taste sour
- Have a relatively low PH
- Turn litmus red
What is unique to bases?
- Turn litmus blue
- Have a slippery feel
- Are causic
- Have a relatively high PH
Reaction type 1

Acid+ reactive metal -> salt + hydrogen
Reaction type 2

Acid + metal hydroxide -> salt + water
Reaction type 3 (acid rain)

Acid + Metal oxide -> salt + water
Reaction type 4

Acid + metal carbonate -> salt + water + carbon dioxide
Reaction type 5

Acid + metal hydrogen carbonate -> salt + water + carbon dioxide
Reaction type 6

Acidic oxide + base -> salt + water
What is an ionic chemical equation?

Deleteing spectator ions
What is the Bronsted-Lowry theory
- Acids are proton donors
- Bases are proton acceptors
What are amphiprotic substances?
- Can act as either acids or bases depending on what they are reacting with.
- Can donate or receive protons
What makes strong acids and bases?
- When they ionise completely
- Donates/accepts protons easily
What makes weak acids and bases?
- Doesn't ionise completely
- Doesn't donate/ accept protons easily
What are polyprotic acids?

Able to donate more than one proton from each molecule.
pH to H+ = ?

10^-pH
H+ to OH- = ?

/10^-14
H+ to pH = ?

-log
Note

Don't use in excess use limiting reagent
Molar ratio?

What you what to find out over what you want to find out
calculations.
- mole-n=m/mr
- Molar ratio
- Molar ratio * moles
- Mass required- m=n*Mr
volumes
- n=c*v
- c=n/v
- v=n/c

Author

bridgit

37930

Card Set

chem sac

Description

chem exam/ test

Updated

2010-10-05T06:39:22Z

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