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A chemist wanted to determine the concentration of a solution of lactic acid, HC3H5O3. She found that the pH of the solution was 2.49. What was the concentration of the solution? The Ka of lactic acid is 1.4 10-4. __M
Why is a solution of sodium bisulfite added to the reaction product mixture? Write a reaction to account for what is happening
Suppose that instead of a grignard reagent with CO2 you added benzophenone (C6H5COC6H5) to the prepared grignard reagent. What product would you form?
The pH of 0.5 M formic acic, HCOOH, is 2.02. Calculate the difference in pH when 6.42 g of HCOONa is added to 390.9 mL of 0.50 M formic acid. Ignore any changes in volume.
The di basic compund B(pkb1=4.00),pkb2=8.00 was titrated with 1.00 M HCl. the intial solution of B was 0.100M and had a volume of 100.0mL. A) At what volumes are the two equivalence points?
Which of the following is a neutralization reaction?
A 24.60 mL sample of 0.185 M HNO3 requires 27.35 mL of a KOH solution for complete neutralization in an acid-base titration. What is the molarity of KOH
A 43 kg person drinks 280. g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 19% of the energy in milk is converted to mechanical work.
What volume of hydrogen gas is produced when 1.40 mol of carbon monoxide reacts completely according to the reaction at 0oC and 1 atm?
How much 5.90 M NaOh must be added to 590.0mL of a butter that is 0.190 m acetic acid and 0.0260 m sodium acetate to raise the pH
How many grams of NaCl must be added to 250g water to lower the vapor pressure by 1.30 mm Hg at 40 degrees C assuming complete dissociation?
Identify the most stable arrangement of the regions of high electron density. Diagram and name the type of structure that the molecules has based on positions of the atoms.
Calculate (a) the work done when the gas expands isothermally against a constant external pressure of 200 Torr until its volume has increased by 3.6 dm3, and (b) the work that would be done if the same expansion had occurred reversibly.
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