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Chem 116 Exam Questions & Correct Verified AnswersChem 116 Exam Questions & Correct Verified Answers
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Chem 116 Exam Questions & Correct Verified Answers
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Chem 116 Exam Questions & CorrectVerified Answers
70% isopropyl alcohol is an example of __ solution - ✔✔Liquid/liquid
The hydrogen peroxide sold in drug stores is composed of 3% hydrogen peroxide and 97% water. In
this solution - ✔✔Hydrogen peroxide is the solute
1 gram of table salt (NaCl) is dropped into a beaker containing 50 grams of water and stirred until a clear
liquid is visible and all of the salt has dissolved. This process may be described as - ✔✔The formation
of a homogenous solution
Molarity is defined as moles of solute per - ✔✔Kilogram of solvent
To make a 3.00M solution, one could take 3.00 moles of solute and add - ✔✔Enough solvent to
make 1.00L of solution
to make a 5.00m solution, one could take 5.00 moles of solute and add - ✔✔1.00kg of solvent
A 0.060m aqueous solution containing which solute will have the highest boiling point? - ✔✔All
will have approximately the same boiling point
A 0.060m aqueous solution containing which solute will have the lowest freezing point? - ✔✔Na2SO4
in the process of dissolving ionic compounds, the cations and anions are separated from the crystal
lattice and surrounded by an ordered shell of solvent molecules. If the solvent is water, the dissolved
ions are said to be - ✔✔Hydrated
, What are the major solute-solvent interactions created when sodium chloride (NaCl) dissolves in water?
- ✔✔Ion-dipole
A solution is 2.25% by mass NaHCO3. How many grams of NaHCO3 are in 450.0 g of solution? -
✔✔10.1 g
A 0.50m solution of which solute has the largest can't Hogg Factor? - ✔✔K3PO4
What is the expected freezing point of a 1.5m solution of glucose in water? If for water is 1.86C -
✔✔-2.8C
Which term describes the measure of the increase in the concentration of a product per unit time? -
✔✔Reaction rate
"Instantaneous rate" is defined as the - ✔✔Rate of reaction at a particular time
Molecular hydrogen can be made from methane gas by the reaction below. How is the rate
of disappearance of CH4 related to the rate of appearance of H2?
-delta [CH4] \ delta t
CH4 + H2O —> CO + 3H2 - ✔✔1 delta [H2] \ 3 delta t
The reaction shown below has the rate law : Rate= k [BrO3-][Br-][H+]2.
BrO3- + 5Br- + 6H+ —> 3Br2 + 3 H2O
What is the overall order of reaction - ✔✔Fourth
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