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The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted. If 0.260 moles of a monoprotic weak acid (Ka = 2.0 × 10-5) is titrated with NaOH, what is the pH of the solution at the half-equivalence point?
Tarnish (silver sulfide) may be removed from a silver spoon by placing the spoon in contact with a metallic container holding a solution of baking soda.
The freezing-point depression of a 0.100 m (molality) MgSO4 solution is 0.225 degrees Celsius. Determine the experimental van't Hoff
The specific heat capacity of the solution produced was 4.20 J/g•°C, and final temperature reached was 34.91°C. How much heat was produced by the dissolution
LDA is added to a solution containing methyl pentanoate. After this reaction has gone to completion, 2-butanone is added. Once this reaction is completed an acid workup is performed.
The value of the Euro is currently $1.32 U.S. and the price of 1 liter of gasoline in France is 0.92 Euro. What is the price of 1 gallon of gasoline in U.S. dollars in France?
Two solid forms of elemental sulfur (S8) are rhombic and monoclinic, denoted A and B, respectively. For the transformation S8(s,A) --> S8(s,B), dH* = 330 J/mol and dS* = 80 J/mol*K.
how many grams of HNO3 must be dissolved to make 25L of a solution that has a pH of 1.5
D Radical-chain polymerization of CH2=CHOCOCH3, followed by base-catalyzed hydrolysis.
A weak acid HX has Ka = 1.00×10-6. What would be the pH of a 0.10 M solution of HX in water?
22.05 mL of a sodium hydroxide solution is needed to react completely with 0.5210 g of KHP (molar mass+204.22) What is the concentration of the sodium hydroxide solution
A sample of methane gas (CH4) at 18.8 oC is heated. The pressure increases from 1.78 atm to 2.46 atm, and the volume of the sample changes from 4.09 L to 1.89 L.
What are the favored geometrical arrangements for ABn molecules for which the "A" atom has 2,3,4,5 and 6 pairs of electrons in its valence shell?
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