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Equal volumes of two different weak acids are titrated with 0.30 M NaOH, resulting in the...
29. a,b,c The following plot shows the pH curves for the titrations of various acids by 0.10 M NaOH (all of the acids were 50.0-mL samples of 0.10 M concentration). 12.0 10.0 8.0 6.0 4.0 2.0 0 10 20 30 40 50 60 Vol 0.10 M NaOH added (mL) a. Which pH curve corresponds to the weakest acid? b. Which pH curve corresponds to the strongest acid? Which point on the pH curve would you examine to see if this...
4. Two 0.100 M solutions of the weak acids HA and HB are titrated using KOH at 25°C. The pH at equivalence of HA is 8.5, while the pH at equivalence of HB is 10.3. 1. Which of these two acids is weaker? ii. Which of the indicators below would be suitable in the titration of HA? Which would be suitable in the titration of HB? Indicator Alizarin yellow GR phenolphthalein methyl orange methyl red bromothymol blue pH range for...
Question 4 10 pts 4. Consider the titration curves (labeled a and b) for two weak acids, both titrated with 0.100 M NaOH: (0) Which acid solution is more concentrated? (ii) Which acid has the larger K? Hd pH TTTTTT TTTTTTT 0 20 40 60 80 100 Volume of base added (mL) 0 () 20 40 60 80 100 Volume of base added (mL) HTML Editore BIVA-A- IE111xx, 3. DO VIVO 12pt MacBook Pro
In a titration, 25 mL of 0.10 M weak diprotic acid solution was titrated by 0.10 M sodium hydroxide, NaOH, and produced a titration curve listed below. (20 points total) 14,0 3. 12.0 10.0 8.0 pH 6.0 4.0 2.0 10.0 5.0 20.0 30.0 15.0 25.0 Volume of 0.100 M NaOH, mL The acid used in above titration is a weak diprotic acid. Briefly explain how you know it's diprotic from looking at the titration curve and how you know a...
A 10.0 mL sample of 0.75 M CH3CH2COOH(aq) is titrated with 0.30 M NaOH(aq) (adding NaOH to CH3CH2COOH). Determine which region on the titration curve the mixture produced is in, and the pH of the mixture at each volume of added base. K of CH3CH2COOH is 1.3 x 10-5 Henderson-Hasselbalch equation: pH =pK+ log NaOH CH3CH2COOH Parta): 1) After adding 18.0 mL of the NaOH solution, the mixture is before the equivalence point on the titration curve. 2) The pH...
The graph below shows the titration curves for two monoprotic acids. What is the approximate pH at the equivalence point of each titration? 40.0 mL of each acid was titrated with 0.100 M base. Which acid is less concentrated? Estimate the pK_a of the weak acid.
A 10.0 mL sample of 0.75 M CH3CH2COOH(aq) is titrated with 0.30 M NaOH(aq) (adding NaOH to CH3CH2COOH). Determine which region on the titration curve the mixture produced is in, and the pH of the mixture at each volume of added base. K of CH3CH2COOH is 1.3 x 10-5. base Henderson-Hasselbalch equation: pH = pK+ log NaOH CH3CH2COOH Parta): 1) After adding 18.0 mL of the NaOH solution, the mixture is (Select) equivalence point on the titration curve. 2) The...
Consider the titration curves of four different acids titrated with a strong base 12.0 10.0 8.0 iv 6.0 pH 4.0 ii 2.0 10 50 20 30 40 Milliliters NaOH 60 Which acid has the smallest K, value? a. i b. ii c. iii d. iv
Titration Curves of Polyprotic Acids 7. Derive the relationship between pH and på, at one-half the equivalence point for the titration of a weak acid with a strong base 8. Could K, for a weak base be determined the same way that K, for a weak acid is determined in this experiment? 9. What is the relationship of the successivo equivalence point volumes in the titration of a polyprotic acid? 10. If the pk of a diprotic acid is 2.90,...
A 10.0 mL sample of 0.75 M CH3CH2COOH(aq) is titrated with 18.0 mL of 0.30 M NaOH(aq) (adding NaOH to CH3CH2COOH). Determine which region on the titration curve the mixture produced is in, and the pH of the mixture. Ka of CH3CH2COOH is 1.3 \times × 10−5. Henderson–Hasselbalch equation: LaTeX: pH=pK_a+\log\frac{\left[base\right]}{\left[acid\right]} p H = p K a + log [ b a s e ] [ a c i d ] 2046 HW10 Q1-1.jpg 1) After adding the NaOH...