Water "softeners" remove metal ions such as Ca2+ and Fe3+ by replacing them with enough Na+ ions to maintain the same number of positive charges in the solution. If  7.33  ×  102 L  of "hard" water is 0.0766 M Ca2+ and 0.00462 M Fe3+, how many moles of Na+ are needed to replace these ions?

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

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Q: 2.58 L solution containing 1.58 mol L-1 hydrochloric acid (HCl) has been left on your bench. How…

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Q: Oxalic acid, H2C2O4, occurs as the potassium of calcium salt in many plants, including rhubarb and…

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Q: 8. How many grams of NaCl are required to precipitate most of the Ag+ ions from 2.50 × 102 mL of…

A: We have to calculate the mass of NaCl that would precipitate out all Ag+ ions from 2.50 × 102 mL of…

Q: An environmental chemist analyzed the effluent (the released waste material) from an industrial…

A: Given :  Volume of sample = 3.52 ml  Volume of NaOH solution = 10.59 ml  Concentration of NaOH…

Q: If 0.850 L of a 5.00-M solution of copper nitrate, Cu(NO3)2, is diluted to a volume of 1.80 L by the…

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Q: A student was tasked to neutralize 25.8 mL solution of 0.379 M H2SO4 (98.079 g/mol) using 0.562 M…

A: Given-> Volume of H2SO4 = 25.8 ml  Molarity of H2SO4 = 0.379 M Molar mass of H2SO4 = 98.079…

Q: Iron reacts with HCl solution to give H2 gas and Fe2+ ions. Suppose that 4.4 g of iron are to be…

A: Metals are very essential in reducing as they have their nature, they donate electrons very easily.…

Q: Water “softeners” remove metal ions such as Ca2+ and Fe3+ by replacing them with enough Na+ ions to…

A: The given data contains, Volume = 1000 L. Ca2+=0.015 MFe3+=0.0010 M.

Q: If 37.5 mL of 0.125 M HCl solution is needed to neutralize a solution of Ca(OH)2, how many grams of…

A: Balanced chemical equation for the reaction between hydrochloric acid and calcium hydroxide is,

Q: The hydronium ion concentration in a sample of springwater is found to be 5.2 ✕ 10−6 M at 15°C. What…

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Q: Aluminum hydroxide is one component of antacids for hyperacidity. If one tablet contains 178 mg,…

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Q: Will all the lead be removed from 13.6 mL of 6.40×10-3 M Pb(NO3)2 upon addition of 14.1 mL of 0.0119…

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Q: The concentration of SO42– ions in a 45.0 mL sample of seawater is determined by adding a solution…

A: Given information: Mass of barium sulfate = 0.315 g Volume of sample = 45.0 mL or 0.045 L

Q: 14.8 g sample of an aqueous solution of hydrobromic acid contains an unknown amount of the acid. If…

A: Aqueous solution of hydrochromic acid=14.8g Volume of barium hydraxide=17.2mL Concentration of…

Q: Zinc dissolves in hydrochloric acid to yield hydrogen gas as follows:Zn(s) + 2HCl(aq) → ZnCl2(aq) +…

A: The values are given as follows:

Q: Iron reacts with HCl solution to give H2 gas and Fe2+ ions. Suppose that 3.7 g of iron are to be…

A: The question is based on reaction Stoichiometry. we have been given mass of iron. we need to…

Q: What mass of oxalic acid dihydate, H2C2O42H2O, is needed to make a 0.498 mol solution of oxalic acid…

A: Given, Number of mol H2C2O4.2H2O = 0.498 mol Volume = 250.0 mL Since, 1000 mL = 1 L  or        1 mL…

Q: 1. What are the normality and molarity of a solution prepared by dissolving 8.050g Ba(0H)2· 8H20 in…

A: Molar mass of Ba(OH)2 . 8H2O = 315 g/mol  Volume = 1500 ml = 1.5 L

Q: 1) 68.1 mL of 5.2 M HCl solution is diluted to a volume of 555 mL. What is the molar concentration…

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Q: A student prepared a standard copper solution by combining 6.37 mL of stock 0.261 mol/L copper(II)…

A: When a solution of Concentration C1 and volume V1 is diluted by adding water to a final volume V2…

Q: A 0.15 M solution of HCl is used to titrate 30.0 mL of a Ca(OH)2 solution of unknown concentration.…

A: Normality Normality is the gram equivalent weight of the solute dissolved per liter of solution.…

Q: A student prepared a standard copper solution by combining 4.12 mL of stock 0.3926 mol/L copper(II)…

A: Since the moles of copper(II) sulfate is coming from the copper(II) sulfate stock solution only…

Q: Zinc dissolves in hydrochloric acid to yield hydrogen gas as follows: Zn(s) + 2HCl(aq) → ZnCl2(aq) +…

A: Determine limiting reagent:1 mL = 0.001 L

Q: The town of Andover obtains drinking water from three sources that together produce up to 6.81 × 107…

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Q: A student titrates an unknown amount of potassium hydrogen phthalate (KH8C8O4 , often abbreviated…

A: Given information: Volume of NaOH = 20.46 mL Concentration of NaOH = 0.100 M Molar mass of KHP =…

Q: 150.00 grams of Iron (III) sulfate is dissolved in enough water to prepare 200.0 ml of solution.…

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Q: The concentration of SO42– ions in a 60.0 mL sample of seawater is determined by adding a solution…

A: Volume of sea water sample is 60 mL Mass of BaSO4 is 0.448 g Concentration of sulfate in mmol/L =?

Q: 40.00 mL of a solution of MgCl2 with a molar volume concentration of 0.933 mol/L is mixed with 100.0…

A: Molarity (M) : The number of moles of a solute dissolved in 1 L (1000 ml) of the solution is known…

Q: Walter White requires a sulfuric acid (Strong acid) solution to use in a very important synthetic…

A: Here we are required to find the concentration of the unknown sulphuric acid.

Q: 0.20 M

A: A) moles of Pb(NO3)2 = ( concentration ) • ( volume )  moles of Pb(NO3)2 = ( 0.20molL-1 ) • ( 0.300L…

Q: Zinc dissolves in hydrochloric acid to yield hydrogen gas as follows. Zn(s) + 2HCl(aq) → ZnCl2(aq)…

A: The balanced reaction taking place is given as, => Zn (s) + 2 HCl (aq) ----------> ZnCl2 (aq)…

Q: If 25.0 mL of a 6.00 M HCL solution is diluted to 2.00 L, what is the molarity of the new solution?

A: f 25.0 mL of a 6.00 M HCL solution is diluted to 2.00 L, what is the molarity of the new solution?…

Q: Iron reacts with HCl solution to give H2 gas and Fe2+ ions. Suppose that 4.4 g of iron are to be…

A: The required balanced chemical reaction is given below.

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.