7. A volumetric analysis was completed on a water sample to determine the amount of carbonate...

7. A volumetric analysis was completed on a water sample to determine the amount of carbonate in the sample.

(a) Initially, a 0.2123 g Na₂CO₃ sample required 15.76 mL of HCl to reach the end point of the titration. What is the molarity of the acid? What is this step referred to as?

(b) A 23.05 mL volume of this titrant is needed to react completely with a 50.00 mL sample containing carbonate. What is the concentration reported as mg/L calcium carbonate?

Expert Solution

queen_honey_blossom answered 2 years ago

You wish to determine the amount of lead in a drinking water sample (500mL). It is...

You wish to determine the amount of lead in a drinking water sample (500mL). It is possible that sulfate in the sample (as well as other ions) will produce a matrix effect that will compromise the analysis, so you use a standard addition calibration method. You transfer 15 mL of your sample into each of five 50 mL volumetric flasks. You add the following volumes of a 5 ppm lead standard to the 5 flasks : 0, 5, 10, 15,...

Assuming the water sample has a pH of 7.2, determine the amount of HOCl and OCl-...

Assuming the water sample has a pH of 7.2, determine the amount of HOCl and OCl- in mg/L contained in the free chlorine residual of the treated sample.

In the laboratory you dissolve 18.6 g of potassium carbonate in a volumetric flask and add...

In the laboratory you dissolve 18.6 g of potassium carbonate in a volumetric flask and add water to a total volume of 500 mL. What is the molarity of the solution? M. What is the concentration of the potassium cation? M. What is the concentration of the carbonate anion? M.

A sample of sodium carbonate unknown is dissolved in 50.0 mL of water. After performing experiment...

A sample of sodium carbonate unknown is dissolved in 50.0 mL of water. After performing experiment 3, the student determines that the second equivalence point occurs at 32.86 mL of 0.1115 M HCl. What is the theoretical pH of the solution after 16.43 mL of HCl has been added. Report your answer to two significant figures. (HINT - refer to the lab procedure and posted notes for the correct way to approach this problem)

no other data provided 8. Determine the calcium carbonate equivalent (CCE) of the following compounds: (amount...

no other data provided 8. Determine the calcium carbonate equivalent (CCE) of the following compounds: (amount that has the same neutralizing value as 100 g pure CaCO3) (a) KOH (b) Mg(OH)2 (c) and CaMg(CO3)2. 9. How many grams of limestone with a CaCO3 equivalent of 100% would you need to apply to an acidic soil with 85% exchangeable Al saturation to reduce it to 10%? The CEC of the soil is 12.5cmolc/kg. 10. How many grams of gypsum (CaSO4.2H2O) would...

The maximum amount of silver carbonate that will dissolve in a 0.278 M sodium carbonate solution...

The maximum amount of silver carbonate that will dissolve in a 0.278 M sodium carbonate solution is: M.

A. The maximum amount of copper(II) carbonate that will dissolve in a 0.291 M ammonium carbonate...

A. The maximum amount of copper(II) carbonate that will dissolve in a 0.291 M ammonium carbonate solution is __________ M B. The molar solubility of chromium(III) hydroxide in a 0.210 M chromium(III) acetate solution is ________ M

John has completed an application for a 7-years personal loan for the amount of $28833. In...

John has completed an application for a 7-years personal loan for the amount of $28833. In the application, he indicated that the money would be used to repay (consolidate) various debts and to make a down payment on a car which he needs to buy for transportation to and from work. John arrived in Australia two years ago. He has been living with his mum in his mum’s renting apartment. Two weeks ago he began working for Coles Ltd. as...

An 8.68 gram sample of a mixture of aluminum carbonate and calcium carbonate is placed in...

An 8.68 gram sample of a mixture of aluminum carbonate and calcium carbonate is placed in a vessel equipped with a massless, frictionless piston. The initial volume can be assumed to be zero. The sample is heated to 800oC. This results in complete decomposition to the metal oxides and carbon dioxide. After the reaction, the metal oxides are titrated to equivalence with 246.2 ml of 0.84 M HCl. If the atmospheric pressure is 752 mm Hg, what is the maximum...

A 14.2 g sample of a mixture of magnesium carbonate and calcium carbonate is treated with...

A 14.2 g sample of a mixture of magnesium carbonate and calcium carbonate is treated with excess HCl. The resulting reaction produces 4.55 L of carbon dioxide gas at 28 °C and 675 torr. Write a balanced chemical equation for the reaction that takes place between magnesium carbonate and HCl. Include physical states. chemical reaction: Write a balanced chemical equation for the reaction that takes place between calcium carbonate and HCl. Include physical states. chemical reaction: Calculate the total number...

Question