Hard water often contains dissolved Ca2+Ca2+ and Mg2+Mg2+ ions. One way to soften water is to add phosphates. The phosphate ion forms insoluble precipitates with calcium and magnesium ions, removing them from solution. Suppose that a solution is 5.5×10−2 MM in calcium chloride and 9.0×10−2 MM in magnesium nitrate. What mass of sodium phosphate would have to be added to 1.0 LL of this solution to completely eliminate the hard water ions? Assume complete reaction.

Q: A 12.4 g sample of an aqueous solution of nitric acid contains an unknown amount of the acid. If…

A:

Q: A geologist discovers a magnesium carbonate hydroxide hydrated salt with the chemical formula…

A: To calculate the number of water of hydration are present in the original hydrated salt.

Q: Many metal ions are precipitated from solution by the sulfide ion. As an example, consider treating…

A: Given: The reaction is as follows, CuSO4(aq) + Na2S(aq) → CuS(s) + Na2SO4(aq) Molarity of Na2S…

Q: o analyze the alcohol content of a certain wine, a chemist needs 0.57 L of an aqueous 0.367 M K 2Cr…

A: Solution - According to the question - Given - Volume of K2Cr2O7 solution = 0.57 L Molarity…

Q: The precipitation reaction between 25.0 mL of a solution containing a cation (purple) and 35.0 mL of…

A: Precipitation reaction: The chemical reaction in which insoluble salt or precipitate form in…

Q: A 13.9 g sample of an aqueous solution of perchloric acid contains an unknown amount of the acid. If…

A: We have HClO4 + NaOH → NaClO4 + H2O Volume of NaOH= 25.9 mL Concentration of NaOH=0.192 M Mass…

Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A:

Q: Vinegar can be assayed to determine its acetic acid content. Determine the molarity of acetic acid…

A: Molarity is defined as number of moles of solute dissolved per litre of the solution.…

Q: Suppose that 2.5 ml of 20% AgNO3 solution (density is 1.19 g/ml) was used to precipitate the…

A: Given,  Mass percentage of AgNO3 in solution = 20%  Volume of AgNO3 = 2.5 mL  Density of the…

Q: One of the active ingredients in stain removers is sodium percarbonate (Na2CO3), and a typical stain…

A: Percentage w/v of Na2CO3 = 6.5 % Volume of solution = 150.0 mL % w/v is given by: %w/v=mass of…

Q: Boric acid, H3BO3, is commonly used in eyewash solutions in chemistry laboratories to neutralize…

A: Given : Molarity of NaOH = 0.475M

Q: When sodium sulfide reacts with cobalt (II) acetate in water, cobalt (II) sulfide and sodium acetate…

A: This question can be solved as:

Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A: Given: The mass of silver chloride (AgCl) is 8.5 mg The molarity of added silver nitrate solution is…

Q: 7.65 g sample of an aqueous solution of hydroiodic acid contains an unknown amount of the acid. If…

A: Weight of sample=7.65g Volume=24.1mL  Concentration of barium hydraxide=0.550M

Q: A 14.3 g sample of an aqueous solution of perchloric acid contains an unknown amount of the acid. If…

A: In the given question we have to calculate the mass Percent of perchloric acid. the given data: mass…

Q: A student determines the chromium(III) content of a solution by first precipitating it as…

A:

Q: _____% by mass

A:

Q: A student makes two separate solutions, KCl (aq) and  NaCl (aq). After the student returns from…

A:

Q: Consider the reaction between aqueous solutions of Pb(NO3)2 and KBr.   Pb(NO3)2(aq) + KBr(aq) =…

A: The Reaction between Lead Nitrate and Potassium bromide Pb(NO3)2(aq)+KBr(aq) ---------->…

Q: The amount of nitrogen in an organic substance can be determined by an analytical method called the…

A: The amount of nitrogen in an organic substance can be determined by an analytical method called the…

Q: Calculate the concentration, in grams of solute per 100 g of water, of a solution in which 7.462g of…

A: Given,7.462 g of solute dissolved in 25.50 mL of water.Determine the concentration in grams per…

Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A:

Q: A 12.7 g sample of an aqueous solution of hydroiodic acid contains an unknown amount of the acid. If…

A: Given data,Mass of sample=12.7gMolarity of NaOH=0.325MVolume of NaOH=24.2mL=0.0242L

Q: A barium hydroxide solution is prepared by dissolving 1.76 g of Ba(OH), in water to make 57.7 mL of…

A: 1) given mass of Ba(OH)2 = 1.76 g      Molar mass of Ba(OH)2 = 171.34 g/mol     Volume = 57.7 mL…

Q: Thallium(I) sulfate is an active ingredient in rat poison. We can analyze a sample for the mass…

A:

Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A: The chemical reaction that takes place between copper chloride and silver nitrate is shown below:…

Q: You have 272.9 mL of a 0.174 M MgSO4 solution. What would the molarity of the resulting solution be…

A: According to the law of dilution, we can write: C1V1 = C2V2       ................... (1) where: C1…

Q: When solutions of silver nitrate and sodium chloride are mixed, silver chloride precipitates out of…

A: Consider the given balanced equation is as follows; Reaction:       AgNO3aq     +    NaClaq      →…

Q: Vinegar is a solution of acetic acid, HC2H3O2, dissolved in water. A 5.84 g sample of vinegar was…

A: Number of moles and mass of acetic acid can be determined.

Q: A 1.22 g sample of KHP is used to titrate a NaOH solution.  A student finds that it requires 15.00…

A: Given: Mass of KHP used = 1.22 g. And volume of NaOH solution required = 15.00 mL = 0.015 L…

Q: An aqueous solution of sodium fluoride, NaF, contains 1.16 grams of sodium fluoride and 17.5 grams…

A:

Q: Consider

A: We will calculate mass percent of acetic acid

Q: A chemist adds 125.0 mL of a 0.183M potassium dichromate (K,Cr,O,) solution to a reaction flask.…

A: Mass of Potassium Dichromate can be calculated in the following way:

Q: How many moles and numbers of ions of each type are present in the following aqueous solution? 51.7…

A: Given : Concentration of MgCl2 = 1.35 M And volume of MgCl2 solution = 51.7 mL = 0.0517 L…

Q: If 100.0 mL of potassium dichromate solution (10.0 g of K2Cr207 per liter) was mixed with 75.0 mL of…

A:

Q: Hard water often contains dissolved Ca2+ and Mg2+ ions. One way to soften water is to add…

A: Given information:Volume of solution = 1.5 LConcentration of the Ca2+ present in the solution =…

Q: The molarity of an aqueous solution of potassium hydroxide, KOH, is determined by titration against…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: Consider the balanced reaction below. FeCl3 (aq) + 3 NAOH (aq) --> Fe(OH)3 (s) + 3 NaCI (aq) A 0.532…

A: Given: Concentration of NaOH = 0.532 M Concentration of FeCl3 = 0.398 M Volume of of FeCl3 = 34.9 mL…

Q: Complete and balance the chemical equation associated with the neutralization of aqueous sodium…

A:

Q: If you add 250 ml of water to 250 ml of a 1.8M NaOH solution, what will the molarity of the diluted…

A: According to law of dilution, the number of moles of solute remains constant in the solution. During…

Q: student weighs out a 12.8 g sample of Ni(NO3)2, transfers it to a 300. mL volumetric flask, adds…

A: Molarity of a solution is defined as the number of moles of solute present in one liter of solvent.…

Q: neutralize a nitric acid solution. 1. Write a balanced chemical equation for the reaction that…

A: Barium hydroxide is a base and nitric acid is acid  Reaction between these two is a neutralization…

Q: Riboflavin, also known as vitamin B2, is a vitamin found in food and used as a dietary supplement..…

A: In order to find the molarity of the resultant solution we first write down the given data: Mass of…

Q: A 1.280 g sample of oxalic acid, H2C2O4, is placed in a 100.0-mL volumetric flask, which is then…

A:

Q: A neutralization reaction occurs when phosphoric acid reacts with sodium hydroxide solution.…

A:

Q: A 12.3 g sample of an aqueous solution of hydrochloric acid contains an unknown amount of the acid.…

A:

Q: Consider a solution prepared by combining 45.0 g of BaCl2 with enough water to prepare a 750.0 mL of…

A: Given information: Mass of barium chloride = 45.0 g Volume of solution = 750.0 mL Concentration of…

Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A: Given reaction: FeCl2 (aq)  + 2AgNO3 (aq)  ----> 2AgCl(s)  + Fe(NO3)2 (aq)  Volume of ground…

Q: One of the Ionic compounds in sports drinks is potassium di hydrogen phosphate. The label on one of…

A: 30mg of potassium in present in 240ml of the solution. The weight of potassium dihydrogen phosphate…

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.