what volume of .100 M NaOH is needed to make 100.0mL of a buffer solution with...
what volume of .100 M NaOH is needed to make 100.0mL of a buffer solution with a pH of 6.00 if one starts with 50.0mL of 0.100M potassium hydrogen phthalate? The Ka2 for potassium hydrogen phthalate is 3.1x10^-6
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what volume of .100 M NaOH is needed to make 100.0mL of a buffer solution with...
What is the pH of a solution made by mixing 100. mL of 0.010 M KHP...
What is the pH of a solution made by mixing 100. mL of 0.010 M KHP (potassium hydrogen phthalate) and 100. mL of 0.032 M Na2P (sodium phthalate). Phthalic acid (H2P) has the following ionization constants: Ka1 = 1.122 x 10-3 Ka2 = 3.908 x 10-6
A buffer solution is prepared by mixing 1000mL of 2 0M lacthtc acid with 100.0mL of...
A buffer solution is prepared by mixing 1000mL of 2 0M lacthtc acid with 100.0mL of 20M sodium lactate. This butferis then diluted 1-5 by adding 4ooml of the buffer to 160.0mL of delonized water. the buffer to 160.0mb of deionized water Calculate the volume (in mL) of 2.oM HCI required to change pH of 50.0ml. of this diluted buffer by one pH unit. Ka (lactic acid) 1.38x104
While standardizing a sodium hydroxide solution, 23.13 mL of the NaOH solution are needed to titrated 0.529 grams...
While standardizing a sodium hydroxide solution, 23.13 mL of the NaOH solution are needed to titrated 0.529 grams of potassium hydrogen phthalate (KHP). Calculate the molarity of the NaOH solution. (Hint: KHP is NOT the chemical formula for potassium hydrogen phthalate.) Part A nothing M NaOH
1.) 4.00 g of NaOH are dissolved in water to make 5.00 L of solution. What...
1.) 4.00 g of NaOH are dissolved in water to make 5.00 L of solution. What is the concentration of hydronium ions, [H3O+], in this solution? Express your answer with the appropriate units. 2.) If you wanted to determine how much KOH (potassium hydroxide; a strong base) was dissolved in water, you could titrate it with a known amount of KHP (potassium hydrogen phthalate; a weak acid) until a color change indicates that the base is completely neutralized. The molecular...
1. What volume of 0.10 M NaOH is needed to neutralize 100 mL of 0.050 M...
1. What volume of 0.10 M NaOH is needed to neutralize 100 mL of 0.050 M HCl? 2a. When 100 mL of 0.01 M NaOH solution is mixed with 100 mL of 0.01 M of HNO3 solution, what is the concentration of H+ and the pH in the resulting mixture? 2b. When 100 mL of 0.01 M NaOH solution is mixed with 100 mL of 0.02 M of HCl solution, what is the concentration of H+ and the pH in...
What volume (in mL) of 0.150 M NaOH must be added to 100.0 mL of a...
What volume (in mL) of 0.150 M NaOH must be added to 100.0 mL of a 0.0500 F solution of fumaric acid (trans-butenedioic acid) to make a buffer of pH 4.50? Ka1 of Fumeric acid = 8.85x10^-4 pKa = 3.05 Ka2 of Fumeric acid = 3.21x10-5
1. Calculate the volume (in mL) of the amount of 0.200 M NaOH required to neutralize...
1. Calculate the volume (in mL) of the amount of 0.200 M NaOH required to neutralize a monoprotic weak acid solution made by 2.00 g of potassium hydrogen phthalate (KHP) dissolved in water. 2. Identify the equivalence point, the half-equivalence point on the titration curve below and determine the pKa of the acid. 12- 10 PH 8-1 6 N 0+ 20 Titrant Volume (ML) 40
An aqueous buffer solution of volume 100 cm3 consists of 0.20 M CH3COOH and 0.20 M...
An aqueous buffer solution of volume 100 cm3 consists of 0.20 M CH3COOH and 0.20 M NaCH3CO2. pKa value of CH3COOH is 4.75. (a) Predict the pH value of this solution. 3 sig. fig (b) Predict the pH value after adding 5.92 mmol NaOH (note, not mM. Volume is not 1 L) to this buffer solution assuming volume is not changed. 3 sig. fig.
A volume of 20.05 mL of NaOH was used to titrate a 0.45 g sample of...
A volume of 20.05 mL of NaOH was used to titrate a 0.45 g sample of potassium hydrogen phthalate (KHP), a monoprotic acid, which has a molecular weight of 204.2 g/mol. Calculate the molarity of the NaOH solution. For the above titration of potassium hydrogen phthalate with NaOH, if you have the following pH indicators: methyl red, bromothymol blue, and phenolphthalein, which indicator should you use? Explain why.
What volume of 80.0 mM potassium maleate buffer, pH 6.5, would be needed to make 0.200...
What volume of 80.0 mM potassium maleate buffer, pH 6.5, would be needed to make 0.200 liters of 5.00 mM maleate buffer containing 2.30 M ammonium nitrate? (6 pts.) Submit Answer Tries 0/2 What mass of ammonium nitrate (F.W. 80.04) would be needed? (6 pts.) Submit Answer Tries /2 In the above example, how many -fold has the original buffer been diluted? (6 pts.) Submit Answer Tries 0/2 Should the ammonium nitrate be dissolved in the buffer before or after...
A buffer solution is prepared by mixing 1000mL of 2 0M lacthtc acid with 100.0mL of 20M sodium lactate. This butferis then diluted 1-5 by adding 4ooml of the buffer to 160.0mL of delonized water. the buffer to 160.0mb of deionized water Calculate the volume (in mL) of 2.oM HCI required to change pH of 50.0ml. of this diluted buffer by one pH unit. Ka (lactic acid) 1.38x104
1. Calculate the volume (in mL) of the amount of 0.200 M NaOH required to neutralize a monoprotic weak acid solution made by 2.00 g of potassium hydrogen phthalate (KHP) dissolved in water. 2. Identify the equivalence point, the half-equivalence point on the titration curve below and determine the pKa of the acid. 12- 10 PH 8-1 6 N 0+ 20 Titrant Volume (ML) 40
What volume of 80.0 mM potassium maleate buffer, pH 6.5, would be needed to make 0.200 liters of 5.00 mM maleate buffer containing 2.30 M ammonium nitrate? (6 pts.) Submit Answer Tries 0/2 What mass of ammonium nitrate (F.W. 80.04) would be needed? (6 pts.) Submit Answer Tries /2 In the above example, how many -fold has the original buffer been diluted? (6 pts.) Submit Answer Tries 0/2 Should the ammonium nitrate be dissolved in the buffer before or after...
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