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Chapter 7: Q30P (page 160)

Use the equation in Problem 7-29 to calculate the titration curve for $10.0 mL$ of $0.100 {MCrO}_{4}^{2 -}$ titrated with $0.100 {MAg}^{+}$ to produce ${Ag}_{2} {CrO}_{4} (s)$

Short Answer

Expert verified

The graph of the titration is

Step by step solution

01

Define the equation for titration curve.

$The equation for titration curve of M^{+} with X^{-} is V_{M} = (\frac{{C_{x}}^{0} + [M^{+}] - [X^{-}]}{{C_{M}}^{掳} + [M^{+}] - [X^{-}]}) Where, {C_{M}}^{掳} is initial concentration of M^{+} {V_{M}}^{掳} is volume of added M^{+} c_{x} is concentration of X^{-} V_{x} os volume of X^{-}$

02

plot the titration graph.

The graph of titration curve for silver chromate.

The spreadsheet for titration curve of silver ion is given as

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Most popular questions from this chapter

Sulfamic acid is a primary standard that can be used to standardize $NaOH .$

$^{+} H_{3} {NSO}_{3}^{-} + OH 鈫� H_{2} {NSO}_{3}^{-} + H_{2} O$ Sulfamic acidFM 97.094What is the molarity of a sodium hydroxide solution if $34.26 mL$ react with $0.3337 g$ of sulfamic acid?

Consider the titration of $50.00 (卤 005) mL$ of a mixture of $l^{-}$ and ${SCN}^{-}$ with $0.0683 (卤 0.0001) {MAg}^{+}$ .The first equivalence point is observed at $12.6 (卤 0.4) mL,$ and the second occurs at $27.7 (卤 0.3) mL .$

(b) Suppose that the uncertainties are all the same, except that the uncertainty of the first equivalence point $(12.6 卤 ? mL)$ is variable. What is the maximum uncertainty (milliliters) of the first equivalence point if the uncertainty in ${SCN}^{-}$ molarity is to be $鈮� 4.0 %$ ?

The excess acid required $39.96 mL$ of $0.1004 MNaOH$ For complete titration to a phenolphthalein end point. Find the weight percent of calcite in the limestone.

Limestone consists mainly of the mineral calcite, ${CaCO}_{3}$ .The carbonate content of 0.5413 g

powdered limestone was measured by suspending the powder in water, adding 10.00 mL of $1.396 MHCl$ and heating to dissolve the solid and expel role="math" localid="1654937947195" ${CO}_{2} {CaCO}_{3} (s) + 2 H^{+} 鈫� {Ca}^{2 +} + {CO}_{2} 鈫� + H_{2} O$ Calcium carbonate FM 100.087

The excess acid required $39.96 mL$ of $0.1004 MNaOH$ for complete titration to a phenolphthalein end point. Find the weight percent of calcite in the limestone.

Arsenic(III) oxide $({As}_{2} O_{3})$ is available in pure form and is a useful (but carcinogenic) primary standard for oxidizing agents such as ${MnO}_{4}^{-}$ .The $({As}_{2} O_{3})$ is dissolved in base and then titrated with in acidic solution. A small amount of iodide ${MnO}_{4}^{-}$ or iodate $({IO}_{3}^{-})$ is used to catalyze the reaction between $H_{3} {AsO}_{3}$ and ${MnO}_{4}^{-}$ .

${As}_{2} O_{3} + 4 OH 鈻� 2 {HAsO}_{3}^{2 -} + H_{2} {OHAsO}_{3}^{2 -} + 2 H^{+} 鈻� H_{3} {AsO}_{3} 5 H_{3} {AsO}_{3} + 2 {MnO}_{4}^{-} + 6 H^{+}$

$鈫� 5 H_{3} {AsO}_{4} + 2 {Mn}^{2} + 3 H_{2} O$

(c) It was found that 0.1468 g of ${As}_{2} O_{3}$ required 29.98 mL of ${KMnO}_{4}$ solution for the faint color of unreacted ${MnO}_{4}^{-}$ to appear. In a blank titration, 0.03 mL of ${MnO}_{4}^{-}$ was required to produce enough color to be seen. Calculate the molarity of the permanganate solution.

A $50.0 - mL$ sample of $50.0 - mL$ is titrated with role="math" localid="1654840699323" $0.0400 {MCu}^{+} .$ The solubility product of is $4.8 脳 10^{- 15}$ . At each of the following volumes of titrant, calculate role="math" localid="1654840898095" ${pCu}^{+},$ and construct a graph of ${pCu}^{+}$ versus milliliters of ${Cu}^{+}$ added:

$0.10, 10.0, 25.0, 50.0, 75.0, 95.0, 99.0, 100.0, 100.1, 101.0, 110.0 mL .$

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