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Definitions
What Property?
What Formula?
Solve it!
Miscellaneous
100
What is a saturated solution?
A solution containing the maximum amount of solute for a given amount of a solvent at a constant temperature and pressure.
100
What type of property is rust?
Chemical because of it's ability to oxidize.
100
What is the formula for density?
p = m/v.
100
Is Mg(s) + Br2 (l) --> MgBr2(s) is a redox reaction?
It is a redox reaction. Mg from 0 to 2+ and Br from 0 to 2-.
100
What is neutral on a pH scale?
7.
200
What is thermochemistry?
The branch of chemistry dealing with heat; how it is absorbed or evolves during chemical reactions.
200
What type of property is density?
Physical because it can be measured without changing it chemically.
200
What is the formula for the constant of a base?
Kb = [Bh+] [OH-] / [B].
200
What is the equation for the dissociation of NaCl in water?
NaCl (s) --> Na+(aq) + Cl (aq).
200
What are two characteristics of spontaneous reactions?
1. Large amounts of products. 2. Release of free energy.
300
What is chemical energy?
Energy stored in chemical bonds.
300
Classify each reaction as exothermic or endothermic: 1. Condensing Steam 2. Burning Alcohol 3. Evaporating Alcohol
1. Exothermic 2. Exothermic 3. Endothermic
300
What is Henry's Law?
S1/ P1 = S2/P2.
300
A cylinder of nitrogen at 25 degrees celsius and 101.3 KPa is heated to 45 degrees celsius. What is the new pressure of the gas?
108 KPa.
300
What would be the effect of equilibrium position if the volume is decreased in the following reaction? 4HCl(g) + O2(g) -->2 Cl2(g) + 2H2O(g) <--
Increase in products.
400
What is molar heat of condensation?
Amount of heat released at its normal boiling point.
400
What is one of the three conditions that ideal gases abide by?
1. No intermolecular forces 2. No volume 3. All collisions are perfectly elastic
400
What is the formula for molarity?
Molarity = moles of solute/ moles of solution.
400
When 2.0mol of methanol is dissolved in 45g of water, what is the mole fraction of methanol?
2.0/4.5 or 0.44.
400
Why does molten sodium chloride conduct an electric current?
It's ions are free to move toward positively and negatively charged electrons.
500
What is the SI unit of pressure?
Pascal (Pa)
500
What type of reaction is 2K(s) + 2H2O(l) --> 2KOH(aq) + H2(g)?
Single Replacement.
500
What is the equation to calculate the moles of solute in a solution?
Molarity x liters of solution.
500
Write a balanced equation for Fe2O3 + C --> Fe +CO2
2Fe2O3 + 3C --> 4Fe + 3CO.
500
What causes freezing point depression?
What causes freezing point depression? Putting a large amount of solute into a solvent.