Formulas
This letter contains only ionic compounds
a). CsNo3, CaSO4, CO2, CoCO3
b). Na2SO4, NiCl2, KNO3, NH3
c). Sr(OH)2, ScCl3, RbSO4, SnI2
d). P4O6, PtCl2, K2O, Pb(NO3)2
Given sodium tetraborate (Na2B4O7), the charge on tetraborate must be
-2
This is the formula of ammonium nitride
(NH4)3N
This is the balanced equation for the reaction of potassium metal with excess water
2K(s) + 2H2O(l) = 2K+(aq) + 2OH-(aq) + H2(g)
Combustion analysis of 2.172 g of a pain reliever containing carbon, hydrogen, and oxygen produced 4.778 g of CO2 and 0.869 g H2O. What is the empirical formula of the compound?
C9H8O4
Formula of calcium phosphate dihydrate
Ca3(PO4)2*2H2O
This is the Hydrogen sulfite ion
HSO3-
This is the name of Fe2O3
iron (III) oxide
These are the coefficients of the balanced reaction where chlorine gas reacts with solid P4 to create gaseous PCl3
6;1;4
Given 3 N2H4 (l) = 4 NH3(g) + N2(g)
reacting 12.6 g ammonia will produce this mass of nitrogen
5.18 g
Name of HF
hydrofluoric acid
This is the oxidation number of Cl in ClO2-
+3
The chemical formula for dichlorine heptoxide
Cl2O7
Balance the equation
Pb(NO3)2(aq) + Na3PO4(aq) = NaNO3(aq) + Pb3(PO4)2(s)
3;2;6;1
2 Al(s) + 3 Cl2(g) = 2 AlCl3(s)
If 4 moles of Al reacts with 9 moles of Cl2, this much chlorine gas is remaining at the end
3 moles
Formula of strontium iodate
Sr(IO3)2
For the reaction
2 SO2(g) + O2(g) = 2 SO3(g)
this is the reducing agent
SO2
The name of Ca(ClO)2
calcium hypochlorite
These are the spectator ions when aqueous solutions of SrCL2 and K2SO4 react to form a precipitate
Cl- and K+
The total perchlorate ion concentration in 400 mL of a 0.20 M Ca(ClO4)2 solution
0.40 M
Which are strong electrolytes
HNO3, C2H5OH, NH4Cl, PbS, HNO2
NH4Cl and HNO3
weak base
it reacts with water to produce hydroxide ions
The name of Ba(C2H3O2)2
Barium acetate
This is the net ionic equation for the reaction that occurs between sulfurous acid and potassium hydroxide
H2SO3(aq) + 2 OH-(aq) = 2 H2O(l) + SO3^(-2)(aq)