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Determine the pH of a solution of 10-3 M sodium formate. (Formate is a byproduct of microbial metabolism, and can also serve as an energy source for anaerobic bacteria. It is produced natrually from degradation of organic matter, and also anthropogenically from fuel combustion.) The acid dissociation constant, Ka for formic acid is 10-3.7. Assume T=4*C and I=0.
To what pH should a solution that is 0.075 M each in Ca2+ and Cd2+ ions be adjusted in order to best separate ions by precipitation of one of the hydroxides. What are the concentrations of the metal ions after the pH is adjusted to this value
Is it possible for the activation energy of a reaction to be negative? Explain your conclusion and provide a molecular level explanation.
What is the basis for distillation techniques used to separate two or more components and If so, this would give me the four apparatus requested.
A piece of metal of mass 18 g at 117?C is placed in a calorimeter containing 48.2 g of water at 21?C. The final temperature of the mixture is 85.4?C. What is the specific heat capacity of the metal? Assume that there is no energy lost to the surro..
The normal respiratory rate for a human being is 15.0 breaths per minute. The average volume of air for each breath is 0.505 L at 20.0°C and 9.95 x 104 Pa. What is the volume of air at STP that an individual breathes in one day (in cubic meters or..
Zinc chloride (ZnCl2) is 52.02% chlorine by mass. What mass of chlorine is contained in 66.0 g of ZnCl2?
A buffer is formed by mixing 100 mL of 0.1 M NH4Cl with 50 mL of 0.3 M NH3. To this solution 12 mL of 0.1 M NaOH is added. What is the approximate pH of the new solution after neutralization? Assume a Kb of 1.8 × 10^-5 for the weak base.
calculate the number of PCl3 molecules formed when 97 P4 molecules and 606 Cl2 molecules react?
Suggest a mechanism for the hydrolysis of n-butyl bromide to n-butanol. Include the elementary steps and indicate the rate determing step
What is the equation for the reaction of cyclohexene wtih MnO4- to form 1,2-cyclohexanediol and MnO2 in a basic medium.
what is the term for a solution whose concentration has been accurately determined usually three or four significant digits? normal solution standard soluatoin stock soluation
sodium hydroxide do you need to add to the volumetric flask before you dilute the solution to volume with distilled water?
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