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For the titration of 25.0 mL of 0.100 M propionic acid, C2H5COOH, with 0.150 M NaOH, answer the following and construct a titration curve. (Ka = 1.3*10^-5 pKa = 4.89)
1. How many milliliters of base are required to "neutralize" the acid?
2. What is the pH of the propionic acid solution before any base is added?
3. What is the pH at the half-stoichiometric point?
4. What is the pH when 95% of the base required to reach the stoichiometric point has been added?
5. What is the pH at the stoichiometric point?
6. What is the pH when 105% of the base required to reach the stoichiometric point has been added?
a 70g piece of ice at 0c is added to a sample of water at 8c, all of the ice melts and the temp of the water decreases to 0c, how many grams of water were in the sample?
Determine how many moles of each Na+ and Cl- are in 1.00L of the saline solution?
However, 1,2-dichlorobutane was more than twice as present in the products as 1,3-dichlorobutane. Account for the differencees between the two.
Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first-order kinetics and a half-life of 4.5 billion years
Determine what mass of hydrogen is required to form 624g of methanol by the reaction CO+2H2->CH3OH.
Consider the following gas-phase equalibrium reaction: N2(g)+O2(g) 2NO(g); Kc=4.10x10^-4 at 2000 degrees C. If 6.0 mol of NO is introduced into a 1.0L container at 2000 degrees C, what is the concentration og NO when equalibrium is reached?
estimate the enthalpy change for the combustion of hydrogen gas in the presence of oxygen gas.
The final equilibrium temperature of the resulting solution is 18.1 C. What is the enthalpy of solution, H, in kilojoules per mole of KBr?
Whats the volume of 1.05 mol of benzene at 20.7 C? The density of benzene of 0.879 g/mL.
A sample of gas is stored in 716 mL tank at 205 kPa and 300 K. The gas is transferred to a different tank with a volume of 925 mL and 325 K. What is the pressure of the gas in the second tank?
Nitrogen dioxide and water react to produce nitric acid HNO3 and nitrogen monoxide.
In the formation of dibenzalacetone, do you expect the configuration of the double bonds in this compound to be E,Z, or a mixture of both? WHY?
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