2.a (0.5 pts) Open Response Question: Citric acid, H:CHO, is a triprotic acid. Consider a buffer...
Citric acid, H3C6H5O7, is a triprotic acid. Consider a buffer system comprising H2C6H5O7- and HC6H5O72- ions. What is the net ionic equation for the reaction that occurs when NaOH is added to a buffer containing H2C6H5O7- and HC6H5O72- ?
A chemistry student weighs out 0.117 g of citric acid (H.CHO), a triprotic acid, into a 250 mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.0800 M NaOH solution Calculate the volume of NaOH solution the student will need to add to reach the final equivalence point. Round your answer to 3 significant digits.
Citric acid, represented by H3Cit, is a triprotic acid. A student mixes together the following solutions in a styrofoam coffee cup: • 5.00 mL of 0.64 M citric acid • 45.00 mL of 0.77 M NaOH The two solutions start at a temperature of 25.5°C, and reach a final temperature of 27.8°C. The final, combined mixture has a mass of 51.6 grams and a specific heat of 4.0 J/g°C. Assume that no heat is transferred to the cup or surroundings....
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H,0), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water, A chemistry student weighs out 0.279 g of citric acid ( H C He plans to titrate the acid with 0.0800 M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the final equivalence point. Be sure your answer has the correct number of significant digits 0 mL
An analytical chemist weighs out 0.026 g of an unknown triprotic acid into a 250 mL volumetric flask and dilutes to the mark with distilled water. She then titrates this solution with 0.0800 M NaOH solution. When the titration reaches the equivalence point, the chemist finds she has added 9.9 mL of NaOH solution Calculate the molar mass of the unknown acid. Be sure your answer has the correct number of significant digits. mol
Question 3 10 pts 1.0 L of buffer solution is made from 0.17 mol citric acid and 0.11 mol sodium citrate. After adding 0.25 mol HCl to the buffer, what is the pH? Ignore the volume change. K, citric acid - 8.4e-4
2. Soda has a pH between 3 and 4. Soda makers often add citric acid to give a tart taste to soda. 20 ml of 0.1 M citric acid (H 3C6H57, pa 3.1, pKa2 4.7, pKa3 6.4) is titrated with 0.1 M NaOH a2 4.7, pka3 6.4) is titrated pH 0 10 20 30 40 50 60 volume of NaOH Citric acid can be used as a buffer. The formula and charge of citric acid (H3CsH5o7, H2C6Hso, HCGH,o, CH3) depends...
Use the References to access important values if needed for this question. A buffer solution is made that is 0.497 Min H,CO, and 0.497 M in NaHCO, if K.for H,CO, is 4.20 x 10-7, what is the pH of the buffer solution? PH Write the net ionic equation for the reaction that occurs when 0.118 mol NaOH is added to 1.00L of the buffer solution. (Use the lowest possible coefficients. Omit states of matter.) + Submit Answer Try Another Version...
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Question 25 3.5 pts A 0.258-g sample of a pure triprotic acid, H3A, (where A is the generic anion of the acid), was dissolved in water and titrated with 0.150 M barium hydroxide solution. The titration required 13.9 mL of the base to reach the equivalence point. What is the molar mass of the acid ? 227 g/mol 82.5 g/mol 371 g/mol 124 g/mol 186 g/mol 1.5 pts Question 22 Identify the strongest intermolecular force in...
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Question 25 3.5 pts A 0.258-g sample of a pure triprotic acid, H3A, (where A is the generic anion of the acid), was dissolved in water and titrated with 0.150 M barium hydroxide solution. The titration required 13.9 mL of the base to reach the equivalence point. What is the molar mass of the acid ? 227 g/mol 82.5 g/mol 371 g/mol 124 g/mol 186 g/mol Question 24 1.5 pts Which of the following compounds would have...