Sunday 28 December 2014

Chapter 2 (nomenclature- ionic compounds)

1.
Which of the following compounds is named potassium hydrogen phosphate?

A)
KH2PO4

B)
K2HPO4

C)
K3PO4

D)
K2Cr2O7

2.
Which of the following compounds is named lithium carbonate?

A)
Na2CO3

B)
LiHCO3

C)
LiCO

D)
Li2CO3

3.
What is the name of KMnO4?

A)
manganese potash

B)
potassium managnese tetroxide

C)
potassium permanganate

D)
potassium oxide

4.
What is the name of KClO?

A)
potassium chlorite

B)
potassium chloride

C)
potassium hypochlorite

D)
potassium oxide


5.
What is the formula for ammonium sulfate?

A)
NH4SO4

B)
NH4(SO4)2

C)
(NH4)2SO4

D)
NH4S

6.
What is the formula for calcium hydrogen phosphate?

A)
Ca2HPO4

B)
Ca(HPO4)2

C)
Ca2H2PO4

D)
CaHPO4

7.
What is the formula for lead (II) carbonate?

A)
PbCO3

B)
Pb2CO3

C)
Pb(CO3)2

D)
PbC


8.
What is the formula for copper (II) cyanide?

A)
CuCN

B)
Cu(CN)2

C)
Cu2CN



D)
CuNCO
Please girls always remember the following

1- names always start with the metal.
2- if the metal is a transition element of Lead Pb or Tin Sn, its valency should be specify according to Stocks system.
3- the anions could be simple ions, like Cl- , O2-, N3-
4- the anion could also be an oxygenated anion like CO32-,  NO3-, SO42-
5- some special anions to remember, Cyanide CN-, permenganate MnO4-, thiocyante SCN-

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