7. How many grams of chlorous acid must be dissolved in water to make 100 mL...
7. How many grams of chlorous acid must be dissolved in water to make 100 mL of a HClO2 solution whose pH is 2.40? Ka for HClO2 = 1.1 x 10-2. Molar mass of HClO2 = 68.5 g/mol.
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7. How many grams of chlorous acid must be dissolved in water to
make 100 mL...
A chemistry graduate student is given 125. mL of a 1.70 M chlorous acid (HNO2) solution....
A chemistry graduate student is given 125. mL of a 1.70 M chlorous acid (HNO2) solution. Chlorous acid is a weak acid with Ka= 1.1 x 10^-2. What mass of NaClO2 should the student dissolve in the HClO2 solution to turn it into a buffer with pH = 2.48? You may assume that the volume of the solution doesn't change when the NaClO2 is dissolved in it. Be sure your answer has a unit symbol, and round it to 2...
how many grams of sodium formate must be dissolved in a 0.300 M solution of formic...
how many grams of sodium formate must be dissolved in a 0.300 M solution of formic acid to make 400.0 ml of a buffer solution with a pH=4.60?
When 4.57 g of a nonelectrolyte solute is dissolved in water to make 835 mL of...
When 4.57 g of a nonelectrolyte solute is dissolved in water to make 835 mL of solution at 23 °C, the solution exerts an osmotic pressure of 869 torr. What is the molar concentration of the solution? concentration: How many moles of solute are in the solution? moles of solute: mol What is the molar mass of the solute? molar mass: g/mol
When 2.34 g of a nonelectrolyte solute is dissolved in water to make 405 mL of...
When 2.34 g of a nonelectrolyte solute is dissolved in water to make 405 mL of solution at 27 °C, the solution exerts an osmotic pressure of 905 torr. What is the molar concentration of the solution? concentration: How many moles of solute are in the solution? moles of solute: mol What is the molar mass of the solute? molar mass: g/mol
When 3.42 g of a nonelectrolyte solute is dissolved in water to make 885 mL of...
When 3.42 g of a nonelectrolyte solute is dissolved in water to make 885 mL of solution at 22 °C, the solution exerts an osmotic pressure of 873 torr. What is the molar concentration of the solution? concentration: concentration: How many moles of solute are in the solution? moles of solute mol What is the molar mass of the solute? g/mol molar mass
A 75 mL solution of .400 M chlorous acid is titrated with a .125 M solution...
A 75 mL solution of .400 M chlorous acid is titrated with a .125 M solution of sodium hydroxide. What is the pH of the solution after 380 mL of the sodium hydroxide solution has been added? Ka for chlorous acid is 1.1 x 10-2. (hint: your answer should contain four significant figures)
When 2.48 g of a nonelectrolyte solute is dissolved in water to make 105 mL of...
When 2.48 g of a nonelectrolyte solute is dissolved in water to make 105 mL of solution at 27 C, the solution exerts an osmotic pressure of 845 torr. What is the molar concentration of the solution? Number How many moles of solute are in the solution? Number mol What is the molar mass of the solute? Number g/ mol
How many grams of sodium hydroxide (NaOH) are must be dissolved in 290.0 mL of water...
How many grams of sodium hydroxide (NaOH) are must be dissolved in 290.0 mL of water to produce a 1.3 M solution?
Can you pleass show the work and explain? (1) How many grams of potassium chloride must be dissolved in 2.50 x 10^(2) m...
Can you pleass show the work and explain? (1) How many grams of potassium chloride must be dissolved in 2.50 x 10^(2) mL of water to make a 0.400 m solution? (2) How many milliliters of commercial hydrochloric acid, which is 11.6 molar, should you use to prepare 5.50 L of 0.500 molar hydrochloric acid? (3) Calculate the molarity of a NaOH solution prepared by mixing 100. mL of 0.20 M NaOH with 150 mL of H2O. (4) Calculate the...
How many grams of dipotassium phthalate (242.3 g/mol) must be added to 100 mL of 0.125...
How many grams of dipotassium phthalate (242.3 g/mol) must be added to 100 mL of 0.125 M potassium hydrogen phthalate to give a buffer of pH 5.80? The Ka's for phthalic acid are 1.12 x 10-3 and 3.90 x 10-6.
When 4.57 g of a nonelectrolyte solute is dissolved in water to make 835 mL of solution at 23 °C, the solution exerts an osmotic pressure of 869 torr. What is the molar concentration of the solution? concentration: How many moles of solute are in the solution? moles of solute: mol What is the molar mass of the solute? molar mass: g/mol
When 2.34 g of a nonelectrolyte solute is dissolved in water to make 405 mL of solution at 27 °C, the solution exerts an osmotic pressure of 905 torr. What is the molar concentration of the solution? concentration: How many moles of solute are in the solution? moles of solute: mol What is the molar mass of the solute? molar mass: g/mol
When 3.42 g of a nonelectrolyte solute is dissolved in water to make 885 mL of solution at 22 °C, the solution exerts an osmotic pressure of 873 torr. What is the molar concentration of the solution? concentration: concentration: How many moles of solute are in the solution? moles of solute mol What is the molar mass of the solute? g/mol molar mass
When 2.48 g of a nonelectrolyte solute is dissolved in water to make 105 mL of solution at 27 C, the solution exerts an osmotic pressure of 845 torr. What is the molar concentration of the solution? Number How many moles of solute are in the solution? Number mol What is the molar mass of the solute? Number g/ mol
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