Homework Answers
As per guidelins I have to solve first one. I solved first two.
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2. If HX represents the formula of a weak acid, what is the formula of the...
#16, 88 & 90 16. Write the formula for the conjugate acid of each of the...
#16, 88 & 90
16. Write the formula for the conjugate acid of each of the following. a. CH NH2 b. PO, c. CN d. Он e. NO, 88. Suppose that 20.00 mL of a 0.100 M strong acid is titrated with 0.100 M strong base. Now suppose that 20.00 mL of a weak acid is titrated with 0.100 M strong base. Which of the following are the same in the two titrations? a. the initial pH of the titration,...
Acid HX is a strong acid and acid HY is weak acid. Which of the following statements are true concerning HX and HY? X. A...
Acid HX is a strong acid and acid HY is weak acid. Which of the following statements are true concerning HX and HY? X. A 0.10 M solution of HX has a lower pH than a 0.10 M solution of HY. Y. A 0.10 M solution of HX conducts electricity better than a 0.10 M solution of HY. Z. When titrated with NaOH, the pH of the equivalence point will be greater for acid HX than for acid HY. X...
Mark each of the following statements about the ½ equivalence point of an acid-base titration TRUE...
Mark each of the following statements about the ½ equivalence point of an acid-base titration TRUE or FALSE. a. It is the point in the titration when the concentration of weak acid (HA) being titrated is equal to the concentration of the conjugate base (A− ). b. It is the point halfway between the beginning of the titration of a weak acid or weak base and the equivalence point. 2 c. When a strong acid is titrated with a strong...
19. The conjugate base salt to a weak acid (NaA) is titrated with 0.100 M HCl...
19. The conjugate base salt to a weak acid (NaA) is titrated with 0.100 M HCl to its equivalence point. A 25.0 mL solution of a 0.200 M solution of the salt was titrated. The pK, for the unknown conjugate acid is 4.31. (a) Will the equivalence point be acidic or basic for this titration? i.e. pH less than 7.0 or greater than 7.0? (b) What is the volume in mL needed of HCl to reach the equivalence point? (c)...
help plwase 2. For a weak acid (e.g., CH.COOH) that is titrated with a strong base,...
help plwase
2. For a weak acid (e.g., CH.COOH) that is titrated with a strong base, (e.g., NaOH), what species (ions and/or molecules) are present in the solution at the equivalence point? 3. For a weak acid (e.g. CH3COOH) that is titrated with a strong base (e.g., NaOH), what species (ions and/or molecules) are present in the solution at the half-equivalence point?
A 20.00 ML sample of a weak acid of the form HX requires 25.17 ml of...
A 20.00 ML sample of a weak acid of the form HX requires 25.17 ml of .1161 M NaOH for titration to the equivalence point. At the equivalence point, the pH of the solution was 8.28. What was the Ka of the weak acid?
Titration of Weak Acid with Strong Base A certain weak acid, HA, with a Ka Value of 5.61 *10^-6, is titrated wit...
Titration of Weak Acid with Strong Base A certain weak acid, HA, with a Ka Value of 5.61 *10^-6, is titrated with NaOH. PART A A solution is made by mixing 8.00 mmol(millimoles) of HA and 1.00 mmol of the strong base. What is the resulting pH? express the pH numerically to two decimal places. pH = ? PART B More strong base is added until the equicalence point is reached. What is the pH of this solution at the...
HF is a weak acid (a monoprotic one). When HF is titrated with a strong base...
HF is a weak acid (a monoprotic one). When HF is titrated with a strong base (like NaOH), it will eventually reach an equivalence point where exactly all of the HF has been reacted with exactly the needed amount of NaOH. What will the pH be when HF reaches equivalence point? (Hint: think about what products will be present and whether they are weak acids, weak bases or neutral...) pH will be 7.0 pH will be greater than 7.0 pH...
Titration of a Weak Monoprotic Acid with a Strong Base Volume of Base (mL) 1. Using...
Titration of a Weak Monoprotic Acid with a Strong Base Volume of Base (mL) 1. Using the graph, determine the K, of the weak acid. 2. Suppose 100mL of the monoprotic acid referred to in the graph was titrated with 1M NaOH, determine the molarity of the weak acid. The corresponding balanced chemical equation is shown below. HA + NaOH + H2O + A + Nat 3. If the weak acid above was prepared by using 5g of the weak...
A. Match each type of titration to its pH at the equivalence point. Weak acid, strong base Strong acid, strong base...
A. Match each type of titration to its pH at the equivalence point. Weak acid, strong base Strong acid, strong base Weak base, strong acid pH less than 7 pH equal to 7 pH greater than 7 B. A 56.0 mL volume of 0.25 M HBr is titrated with 0.50 M KOH. Calculate the pH after addition of 28.0 mL of KOH. C. Consider the titration of 50.0 mL of 0.20 M NH3 (Kb=1.8 x 10^-5) with 0.20 M HNO3....
#16, 88 & 90
16. Write the formula for the conjugate acid of each of the following. a. CH NH2 b. PO, c. CN d. Он e. NO, 88. Suppose that 20.00 mL of a 0.100 M strong acid is titrated with 0.100 M strong base. Now suppose that 20.00 mL of a weak acid is titrated with 0.100 M strong base. Which of the following are the same in the two titrations? a. the initial pH of the titration,...
19. The conjugate base salt to a weak acid (NaA) is titrated with 0.100 M HCl to its equivalence point. A 25.0 mL solution of a 0.200 M solution of the salt was titrated. The pK, for the unknown conjugate acid is 4.31. (a) Will the equivalence point be acidic or basic for this titration? i.e. pH less than 7.0 or greater than 7.0? (b) What is the volume in mL needed of HCl to reach the equivalence point? (c)...
help plwase
2. For a weak acid (e.g., CH.COOH) that is titrated with a strong base, (e.g., NaOH), what species (ions and/or molecules) are present in the solution at the equivalence point? 3. For a weak acid (e.g. CH3COOH) that is titrated with a strong base (e.g., NaOH), what species (ions and/or molecules) are present in the solution at the half-equivalence point?
Titration of a Weak Monoprotic Acid with a Strong Base Volume of Base (mL) 1. Using the graph, determine the K, of the weak acid. 2. Suppose 100mL of the monoprotic acid referred to in the graph was titrated with 1M NaOH, determine the molarity of the weak acid. The corresponding balanced chemical equation is shown below. HA + NaOH + H2O + A + Nat 3. If the weak acid above was prepared by using 5g of the weak...
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