1•] For a strong acid- strong base titration equivalence point should be at pH=7. Hence answer can be A or B. But here strong acid is the analyte and strong base is the titrant .Hence the answer is B.
2•] weak acid vs strong base gives equivalence point in the basic region that is above pH 7. Answer is D.
3•]. Polyprotic base vs strong acid titration curve has more than one equivalence points. Hence answer is E.
4•] .
Weak base vs strong acid titration curve has equivalence point in acidic region ,pH<7. Hence C.
5•]. pH= -log[H+]
[H+]=10^(-pH)
=10^(-4)
=0.0001 M
Answer D.
6•]. [H+] =10^(-pH)
=10^(-3)
=0.001 M
Answer D.
7•]. For a weak acid
[H+] =?(ka÷c)
=?{(10^-4)÷0.01}
=0.1000 M
pH= -log[0.1000]
=1
answer A
8•] pH= -log[10^-5]
=5
Hence the solution is acidic. Answer B.
as A Questions 1-4 refers to the five titration curves (labelled mL of titrant mL of...
To learn about titration types and how to calculate pH at different points of titration. In an acid-base titration, a titrant (solution of a base or acid) is added slowly to an analyte (solution of an acid or base). The titration is often monitored using a pH meter. A plot of pH as a function of the volume of titrant added is called a pH titration curve. Prior to the titration, the pH is determined by the concentration of the...
Question: In the figure below, titration curves for strong acid with strong base and weak acid with strong base are shown. Compare the shapes of these curves early in the titration for three different cases: titration of a strong acid, titration of a weak acid with a lower pKa, and titration of a weak acid with a higher pKa. Discuss with the class why the titration curve for weak acids increase more rapidly early in the titration than do stronger...
Learning Goal: To learn about titration types and how to calculate pH at different points of titration. In an acid-base titration, a titrant (solution of a base or acid) is added slowly to an analyte (solution of an acid or base). The titration is often monitored using a pH meter. A plot of pH as a function of the volume of titrant added is called a pH titration curve. Prior to the titration, the pH is determined by the concentration...
Workshop 5: Titration Curves A pH or titration curve can be produced by plotting the pH of a solution (containing an analyte) versus the volume of added The equivalence or end point of a titration occurs when enough titrant has been added to consume all the acid or base initially present in the analyte.You know you have reached the endpoint when you see a significant change in the pH of the solution. Part Lets begin by analyzing a titration curve...
please explain, thank you! 25) (5 pts) Draw/label: With volume of titrant on the the titration curve for a monoprotic weak base with (from pH 0-14 vs. volume of titrant added) and clear point in the titration curve. th volume of titrant on the x-axis and pH on the y-axis, DRAW ce with a weak acid titrant? Label your axis s. volume of titrant added and clearly indicate the pka and the equivalence
The following graph shows the pH curve for the titration of 25 mL of a 0.1 M monoprotic acid solution with a 0.1 M solution of a monoprotic base. mL of 0.1 M base added (1) The pH curve represents the titration of a _______(weak/strong) acid with a _______(weak/strong)base. (2) Choose a suitable indicator for the endpoint of the titration from the following pulldown list __________.(bromocresol green / methyl red / bromothymol blue / cresol red / thymol blue /...
Consider the titration of 80.0 mL of 0.0200 M CH3NH2 (a weak base; Kb = 0.000440) with 0.100 M HNO3. Calculate the pH after the following volumes of titrant have been added: (a) 0.0 mL pH = (b) 4.0 mL pH = (c) 8.0 mL pH = (d) 12.0 mL pH = (e) 16.0 mL pH = (f) 24.0 mL p H =
A 40.0 mL solution of 30.0 M of succinic acid (aq) is titrated with 0.300 M of KOH. Find the pH of the solution. (pKa=4.2). A) initially B) 1/2 way to the equivalence point C) at the equivalence point D) 1.00 mL past the equivalence post 2) sketch the titration curve that results from above titration. Label A) only a weak base present. B) Buffer. C) Only a weak acid present. D) Strong base in excess. E) pH = pKa
Consider the curve shown here for the titration of a weak base with a strong acid and answer each question. a. What is the pH and what is the volume of added acid at the equivalence point? b. At what volume of added acid is the pH calculated by working an equilibrium problem based on the initial concentration and Ks of the weak base? c. At what volume of added acid does pH = 14 - pka ? d. At what volume of added...
1oo ml. to the pA, iation curve for a weak acid being titrated with a strong base is pll equal to the pk, of base is The r-axis scale goes from 0.0 ml to 20.0 ml. The sharp rise is at the acid? The r-axis 24, At what point in the following titratí 20 a. 0.0 mL b.5.0 mL c. 9.0 ml d. 10.0 mL e. 18.0 ml 25. Acid-base indicators change color a. exactly when pH-pK, of the always...