How many grams of Na2EDTA.2H2O (FM 372.23) should be mixed with 1.95g of Ca(NO3)2.2H2O(FM 201.12) in a 500-mL volumetri...
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![logK = 10.65 So K = 4.47 x 1010 Formation constant of Ca(EDTA)]-2 = 4.47 x 1010 At pH =9, the fraction of EDTA that exists Y-](http://img.homeworklib.com/questions/fcaa7470-1fef-11ea-94df-9351e07b9a15.png?x-oss-process=image/resize,w_560)
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How many grams of Na2EDTA.2H2O (FM 372.23) should be mixed with 1.95g of Ca(NO3)2.2H2O(FM 201.12) in a 500-mL volumetri...
In forming a chelate with a metal ion, a mixture of free EDTA (abbreviated Y4–) and...
In forming a chelate with a metal ion, a mixture of free EDTA
(abbreviated Y4–) and metal chelate (abbreviated MYn–4) can buffer
the free metal ion concentration at values near the dissociation
constant of the metal chelate, just as a weak acid and a salt can
buffer the hydrogen ion concentration at values near the acid
dissociation constant. This equilibrium is governed by the equation
where Kf is the association constant of the metal and Y4–, ?Y4– is
the fraction...
How many grams of NaNO2 should be mixed with 20 mL of 0.5 M HNO2 to...
How many grams of NaNO2 should be mixed with 20 mL of 0.5 M HNO2 to buffer it at a pH of 3.50? The Ka for HNO2 is 7.1 x 10-4.
(1 point) How many grams of NaHCO3 should be mixed with 4.500 g of Na2CO3 to...
(1 point) How many grams of NaHCO3 should be mixed with 4.500 g of Na2CO3 to produce 150.0 mL of buffer with a pH of 9.50?
You are asked to prepare 500 ml of a 0 250 M acetate Puffer at pH...
You are asked to prepare 500 ml of a 0 250 M acetate Puffer at pH 5.00 using only pure acetic acid (MW = 60.05 g/mol, pKa = 4.76). 3 00 M NaOH, water. Answer the following questions regarding the preparation of the buffer. How many grams of acetic acid will you need to prepare the 500 mL buffer? Note that the given concentration of acetate refers to the concentration of all acetate species in solution. What volume of 3.00...
How many grams of lead nitrate, Pb(NO3)2, are required to make a 7.06 % w/v aqueous...
How many grams of lead nitrate, Pb(NO3)2, are required to make a 7.06 % w/v aqueous solution in a 50.0 mL volumetric flask? in grams
How many grams of boric acid, B(OH)3 (FM 61.84), should be used to make 0.100 L...
How many grams of boric acid, B(OH)3 (FM 61.84), should be used to make 0.100 L of 0.0586 M solution? 9 What kind of flask is used to prepare this solution? This solution should be prepared in a LI-Select-▼| flask.
You are asked to prepare 500. mL 0.150 M acetate buffer at pH 5.10 using only...
You are asked to prepare 500. mL 0.150 M acetate buffer at pH 5.10 using only pure acetic acid (MW = 60.05 g/mol, pka = 4.76), 3.00 M NaOH, and water. How many grams of acetic acid will be needed to prepare the 500. mL buffer? Note that the given concentration of acetate refers to the concentration of all acetate species in solution. mass: DD What volume of 3.00 M NaOH, must be added to the acetic acid to achieve...
You are asked to prepare 500. mL 0.300 M acetate buffer at pH 5.10 using only...
You are asked to prepare 500. mL 0.300 M acetate buffer at pH 5.10 using only pure acetic acid (MW = 60.05 g/mol, pKa = 4.76), 3.00 M NaOH, and water. How many grams of acetic acid will be needed to prepare the 500. mL buffer? Note that the given concentration of acetate refers to the concentration of all acetate species in solution. mass: 60 What volume of 3.00 M NaOH, must be added to the acetic acid to achieve...
You are asked to prepare 500. mL 0.150 M acetate buffer at pH 5.00 using only...
You are asked to prepare 500. mL 0.150 M acetate buffer at pH 5.00 using only pure acetic acid (MW = 60.05 g/mol, pKa = 4.76), 3.00 M NaOH, and water. How many grams of acetic acid will be needed to prepare the 500. mL buffer? Note that the given concentration of acetat refers to the concentration of all acetate species in solution. mass: What volume of 3.00 M NaOH, must be added to the acetic acid to achieve a...
You are asked to prepare 500 mL 0.300 M acetate buffer at pH 4.90 using only...
You are asked to prepare 500 mL 0.300 M acetate buffer at pH 4.90 using only pure acetic acid (MW = 60.05 g/mol pk, = 4.76), 3.00 M NaOH, and water. How many grams of acetic acid will be needed to prepare the 500 mL buffer? Note that the given concentration of acetate refers to the concentration of all acetate species in solution. mass: What volume of 3.00 M NaOH, must be added to the acetic acid to achieve a...
In forming a chelate with a metal ion, a mixture of free EDTA
(abbreviated Y4–) and metal chelate (abbreviated MYn–4) can buffer
the free metal ion concentration at values near the dissociation
constant of the metal chelate, just as a weak acid and a salt can
buffer the hydrogen ion concentration at values near the acid
dissociation constant. This equilibrium is governed by the equation
where Kf is the association constant of the metal and Y4–, ?Y4– is
the fraction...
You are asked to prepare 500 ml of a 0 250 M acetate Puffer at pH 5.00 using only pure acetic acid (MW = 60.05 g/mol, pKa = 4.76). 3 00 M NaOH, water. Answer the following questions regarding the preparation of the buffer. How many grams of acetic acid will you need to prepare the 500 mL buffer? Note that the given concentration of acetate refers to the concentration of all acetate species in solution. What volume of 3.00...
How many grams of boric acid, B(OH)3 (FM 61.84), should be used to make 0.100 L of 0.0586 M solution? 9 What kind of flask is used to prepare this solution? This solution should be prepared in a LI-Select-▼| flask.
You are asked to prepare 500. mL 0.150 M acetate buffer at pH 5.10 using only pure acetic acid (MW = 60.05 g/mol, pka = 4.76), 3.00 M NaOH, and water. How many grams of acetic acid will be needed to prepare the 500. mL buffer? Note that the given concentration of acetate refers to the concentration of all acetate species in solution. mass: DD What volume of 3.00 M NaOH, must be added to the acetic acid to achieve...
You are asked to prepare 500. mL 0.300 M acetate buffer at pH 5.10 using only pure acetic acid (MW = 60.05 g/mol, pKa = 4.76), 3.00 M NaOH, and water. How many grams of acetic acid will be needed to prepare the 500. mL buffer? Note that the given concentration of acetate refers to the concentration of all acetate species in solution. mass: 60 What volume of 3.00 M NaOH, must be added to the acetic acid to achieve...
You are asked to prepare 500. mL 0.150 M acetate buffer at pH 5.00 using only pure acetic acid (MW = 60.05 g/mol, pKa = 4.76), 3.00 M NaOH, and water. How many grams of acetic acid will be needed to prepare the 500. mL buffer? Note that the given concentration of acetat refers to the concentration of all acetate species in solution. mass: What volume of 3.00 M NaOH, must be added to the acetic acid to achieve a...
You are asked to prepare 500 mL 0.300 M acetate buffer at pH 4.90 using only pure acetic acid (MW = 60.05 g/mol pk, = 4.76), 3.00 M NaOH, and water. How many grams of acetic acid will be needed to prepare the 500 mL buffer? Note that the given concentration of acetate refers to the concentration of all acetate species in solution. mass: What volume of 3.00 M NaOH, must be added to the acetic acid to achieve a...
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