Exam 3: review

Question 1

ACID-BASE RX involving weak acid or base ionic equation

Answer 1

The weak acid or base does not dissociate into ions, so you leave it in it’s acqeous form but do not split it into ions.

Question 2

Strong abases

Answer 2

• Group I hydroxdes
• Ba, Sr, Ca hyroxides are slightly soluble in water, but what does dissolve is 100% ionised, so we consider them also strong bases

Question 3

Strong acids

Answer 3

HCl, HBr, HI, nitric, sulfuric, chloric, perchloric.

Noted weak acids: HF, HCN, and others.

Question 4

Crucial oxidation number rules

Answer 4

• F atoms always have a ON of -1
• halogens have -1 except when with oxygen
• oxygen normally has -2 except with fluoride, and in peroxides (-1), and superoxides(-0.5).