Solubility Rules
What group on the periodic table is always soluble?
Group 1A
KI
What is Potassium iodide?
How do you calculate Molar Mass of a compound?
Mutiply amu of elements by how much there is listed in the formula and add the results.
What kind of reaction is:
2H2O(l)→2H2(g) +O2(g)
Decomposition reaction
What are the four driving forces of a reaction?
1). Formaiton of a solid
2). Formation of water
3). Transfer of electrons
4). Formation of a gas
Magnesium Oxide
What is MgO
What is the mass percent of Mg in Mg(OH)2?
41.68%
Rule for signifigant figures for addition and subtraction
The last digit retained in the result is in the same posisiton (with respect to the decimal point) as the last digit in input number with the leftmost last digit.
Will the combination of K2CrO4 (aq) and Ba(NO3)2 form a precipitate? If yes what is the name.
Yes, BaCrO4 (Barium Chromate)
Exceptions to the transition metal ion naming
Zn2+ and Ag+
A compound was analyzed and was found to contain the following percentages of the elements by mass: Tin, 45.56%; Chlorine, 54.43%. Determine the empirical formula of the coumpound.
SnCl4
What is the special naming rules for Mercury?
Hg (I) = Hg22+
Hg (II)= Hg2+Write the net ionic equation for the mixture of KNO3(aq) and BaCl2(aq).
Trick question. No reaction occurs because all of the ions remain in the solution.
Name for O22-
Peroxide
If you are given 4.86 moles of Calcium carbonate, what is the mass in grams?
486 grams
Older name for Fe3+
Ferric
Nitric acid is a strong acid. Write the molecular, complete ionic, and net ionic equation for the reaction of aqueous nitric acid and aqueous potassium hydroxide.
molecular:
HNO3(aq) +KOH(aq)→ H2O(l) + KNO3(aq)
Complete ionic:
H+(aq) +NO3-(aq) +K+(aq) +OH-(aq)→H2O(l) +K+(aq) +NO3-(aq)
Net:
H+(aq) + OH-(aq)→H2O(l)
Type (III) Naming
What is a bond formed between two non-metals?
Isopentyl acetate, C7H14O2 is the copmoud released in bee stings. About 1 microgram (1 * 10-6g) is in each sting. How many moles and molecules of Isopentyl acetate are in each sting?
8*10-9mol C7H14O2
5*1015 molecules
What is meant by Strong Base?
Strong Bases are those hydroxide compounds that dissociate fully when dissolved in water.