9A ) A 0.1752 g sample of solid primary standard AgNO3 was dissolved in water and...

9A ) A 0.1752 g sample of solid primary standard AgNO3 was dissolved in water and titrated with 21.672 g of dilute KSCN solution. Calculate the weight molarity of KSCN solution?

Solutions

Expert Solution

NOTE : AgNO3 is a primary standard which is used for the standardisation of secondary standards .

weight of solute AgNO3 , Wt = 0.1752 g & Mwt of soluteAgNO3, Mwt = 169.8731 g/mol

weight of solvent KSCN, W = 21.672 g

we know that , WEIGHT MOLARITY , m = Wt / Mwt * 1000 / W

m = 0.1752 / 169.8731 * 1000 / 21.672

WEIGHT MOLARITY of KSCN IS, m = 0.0476m

queen_honey_blossom answered 1 year ago

Next > < Previous

Related Solutions

A 5.59 g sample of a solid containing Ni is dissolved in 20.0 mL water. A...

A 5.59 g sample of a solid containing Ni is dissolved in 20.0 mL water. A 5.00 mL aliquot of this solution is diluted to 100.0 mL and analyzed in the lab. The solution was determined to contain 5.70 ppm Ni. Determine the molarity of Ni in the 20.0 mL solution. Determine the mass in grams of Ni in the original sample. Determine the weight percent of Ni in the sample.

A 0.1936 gram sample of primary standard K2Cr2O7 was dissolved in water, the solution was acidified,...

A 0.1936 gram sample of primary standard K2Cr2O7 was dissolved in water, the solution was acidified, and after the addition of KI, the titration of liberated I2 required 33.61 ml of Na2S2O3 solution. Calculate the molarity of the thiosulfate solution.

You have a 1.153 g sample of an unknown solid acid, HA, dissolved in enough water...

You have a 1.153 g sample of an unknown solid acid, HA, dissolved in enough water to make 20.00 mL of solution. HA reacts with KOH(aq) according to the following balanced chemical equation: HA(aq)+KOH(aq)--->KA(aq)+H2O(l) if 13.40 mL of 0.715 M KOH is required to titrate the unknown acid to the equivalence point, what is the concentration of the unknown acid? ALSO What is the molar mass of HA?

A 1.82 g sample of solid N(CH3)4Cl (s) is dissolved in 148 mL of water in...

A 1.82 g sample of solid N(CH3)4Cl (s) is dissolved in 148 mL of water in a coffee cup calorimeter. Once all of the N(CH3)4Cl (s) is dissolved in the water, the final temperature of the solution is found to be 12.46°C. If the initial temperature of the water in the calorimeter was 21.36 °C, calculate the calorimeter constant (in J/K) for the coffee cup calorimeter. Report your answer to three significant figures. The heat of solvation of N(CH3)4Cl (s)...

A 4.75 g sample of solid NaOH is dissolved in 50.5 g of H2O in a...

A 4.75 g sample of solid NaOH is dissolved in 50.5 g of H2O in a constant-pressure calorimeter having a heat capacity of 18.5 J/°C. The temperature rises from 21.1°C to 33.6°C. Assuming that the solution has a specific heat capacity of 4.184 J/g·°C and negligible heat loss from the calorimeter, how much heat is produced in the solution process? Thanks so much!!

A 0.9140 g sample of a mixture of NaCl and KCl is dissolved in water, and...

A 0.9140 g sample of a mixture of NaCl and KCl is dissolved in water, and the solution is then treated with an excess of AgNO3 to yield 1.943 g of AgCl. Calculate the percent by mass of each compound in the mixture.

A 0.9000 g sample of a mixture of NaCl and KCl is dissolved in water, and...

A 0.9000 g sample of a mixture of NaCl and KCl is dissolved in water, and the solution is then treated with an excess of AgNO3 to yield 1.923 g of AgCl. Calculate the percent by mass of each compound in the mixture. ____% mass of NaCl ____% mass of KCl

- A 35.0 g sample of ethylene glycol, HOCH2CH2OH is dissolved in 500 g of water....

- A 35.0 g sample of ethylene glycol, HOCH2CH2OH is dissolved in 500 g of water. The vapor pressure of water at 32 C is 35.7 mmHg, What is the vapor pressure of the water/ethylene glycol solution at 32 C? - What is the Boiling Point of the solution resulted from the dissolving of 32.5 g of sugar (C6H12O6) in 250.0 g of water? - . A 1.07 mg sample of a compound was dissolved in 78.1 mg of camphor....

When a 7.00-g sample of RbBr is dissolved in water in a calorimeter that has a...

When a 7.00-g sample of RbBr is dissolved in water in a calorimeter that has a total heat capacity of 1.931 kJ·K–1, the temperature decreases by 0.480 K. Calculate the molar heat of solution of RbBr.

A mixture contains only and . A 4.51-g sample of the mixture is dissolved in water...

A mixture contains only and . A 4.51-g sample of the mixture is dissolved in water and an excess of is added, producing a precipitate of . The precipitate is filtered, dried, and weighed. The mass of the precipitate is 1.06 g. What is the mass percent of in the sample? %

Subjects