Dilutions
Colligative Properites
Osmosis
Rate of Reactions
Energy Diagrams
100
Calculate the final concentration when 2.0 L of a 6.0 M HCl solution is added to water so that the final volume is 6.0 L.
2.0 M
100
How many moles of product are present when 1 mol of CaCl2 dissolves in water
3 mols
100
In osmosis water moves from __ to __
lower solute concentration, higher solute concentration
100
what are the three requirements for a chemical reaction
collision
orientation
energy
100
Letter B
200
Calculate initial volume need for a 0.500 M H3PO4 solution prepared from 50.0 mL of a 6.00 M H3PO4 solution
600 mL
200
How does the number of solutes in the product affect the boiling and freezing points?
with more mols
boiling - increases
freezing - decreases
200
define isotonic, hypotonic, hypertonic
isotonic - equal concentration
hypotonic - lower concentration
hypertonic - higher concentration
200
what factors influence rate of reactions?
temperature
concentration
catalysts
200
exothermic
300
What initial volume, in milliliters, of a 2.40 M NaCl solution is needed to prepare 80.0 mL of a 0.600 M NaCl solution?
20 mL
300
Which will have the lower freezing point
1.0 mole of glycerol (nonelectrolyte) and 2.0 moles of ethylene glycol (nonelectrolyte) each in 1.0 kg of water
2 mols ethylene glycol
300
If the following substances are separated by a semipermeable membrane which will have an increase in water level?
5% (m/v) sucrose and 10% (m/v) sucrose
10% sucrose
300
How does adding more reacting molecules affect the rate of the reaction?
increases rate
300
Is the following exo or endothermic
endothermic
400
What is the final concentration (m/v) when 18 mL of a 12% (m/v) NaCl solution is diluted to a volume of 85 mL?
2.5%
400
Ethylene glycol, C2H6O2, a nonelectrolyte, is added to the water in a radiator to give a solution containing 56 g of ethylene glycol in 1 kg of water. What is the boiling point of the solution?
100.46*C
400
A 10% (m/v) starch solution is separated from a 1% (m/v) starch solution by a semipermeable membrane. Which way will the water flow? Which has the higher osmotic pressure?
to the 10% solution, 10% is higher
400
In the following reaction, what happens to the number of collisions when more Br2(g) molecules are added?
H2(g)+Br2(g) → 2HBr(g)
number of collisions increases
400
Catalyzed
500
What initial volume, in milliliters, of a 15% (m/v) mannose solution is needed to prepare 0.125 L of a 3.0% (m/v) mannose solution?
25 mL
500
Ethylene glycol, C2H6O2, a nonelectrolyte, is added to the water in a radiator to give a solution containing 56 g of ethylene glycol in 1 kg of water. What is the freezing point of the solution?
-1.7*C
500
which of the following will have a higher osmotic pressure?
0.1% (m/v) starch or 10% (m/v) starch
10% starch
500
How does using an ice blanket on a patient affect the rate of metabolism in the body?
Lowering the temperature will decrease the rate of metabolism.
500
Is the reverse or forward reaction have a higher activation energy
forward