Imidazole (C3H4N2, FM 68.08) is a weak base with pKb = 7.01. You wish to make 250.0 mL of a 0.300 M buffer at pH 7.50. You can use one of two methods. a. First, starting with imidazole and imidazole hydrochloride, what mass of each would you need to combine and dilute to 250.0 mL to create your buffer? b. Now, starting instead with imidazole and 0.500 M HCl, what mass of imidazole should you use, and approximately how many milliliters of HCl will you need to add (before diluting to a final volume of 250.0 mL with water)? c. Of the two methods, which one is preferable and why?
Ionic Equilibrium
Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.
Arrhenius Acid
Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red.
Bronsted Lowry Base In Inorganic Chemistry
Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.
Imidazole (C3H4N2, FM 68.08) is a weak base with pKb = 7.01. You wish to make 250.0 mL of a
0.300 M buffer at pH 7.50. You can use one of two methods.
a. First, starting with imidazole and imidazole hydrochloride, what mass of each would you need to
combine and dilute to 250.0 mL to create your buffer?
b. Now, starting instead with imidazole and 0.500 M HCl, what mass of imidazole should you use, and
approximately how many milliliters of HCl will you need to add (before diluting to a final volume of
250.0 mL with water)?
c. Of the two methods, which one is preferable and why?
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