(1). What is the meant by hardness of water? Explain the difference between temporary and permanent hardness?

Q: 11. Calculate the normality of a potassium dichromate solution prepared by placing 9.67 grams of…

A: In this question, we will determine the normality of K2Cr2O7 from the given mass of potassium…

Q: Sodium nitrate nano3 weighing 50g was dissolved in water weighing 150 grams. What is the mass…

A: The mass of sodium nitrate is = 50 g The mass of water is = 150 g The mass fraction of sodium…

Q: The volume of hydrochloric acid required to prepare an approximate solution of 0.2 normal…

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Q: standardizing a solution of NaOH against 1.431g of KHC8H4O4, the analyst uses  35.50 mL of the…

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Q: 4. What do you mean by eutectic point? Discuss eutectic point with help of suitable diagram? Discuss…

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Q: Based from the Molarity of the palmitic acid solution that you were able to solve from the previous…

A: The equation of dilution is given by, M1V 1= M2V2  where M1 is the molarity of stock solution; V1…

Q: 6. The mass of K3PO4 needed to prepare 250.0mL of an aqueous solution in which P0,3 concentration is…

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Q: What is the molarity of phosphoruc acid in a solution labelled 20.0% phosphoric acid (H3PO4) by…

A: Given that:                        Weight by weight percent = 20.0 %        Density of phosphoric…

Q: Calculate the DGmix, DSmix, DHmix, and DVmix for a solution prepared by mixing 2 moles of benzene…

A: Given the moles of benzene, nb = 2 mol Moles of toluene, nt = 3 mol Total moles = (3+2) mol = 5 mol…

Q: The boiling point of diethyl ether, CH3CH2OCH2CH3, is 34.500 °C at 1 atmosphere. Kb(diethyl ether) =…

A: Boiling point is a colligative property meaning it depends on the amount of solute or ions in…

Q: Calculate the amount of temporary and permanent hardness of a water sample in units of Degree…

A: We have to find the temporary and permanent hardness of a water sample in units of Degree Clarke’s,…

Q: When 0.279 g of a molecular compound, benzoic acid, was dissolved in 43.0 g of benzene, the freezing…

A: Given data contains, Mass of solute (benzoic acid)=0.279 g Mass of solvent (benzene)=43.0 g Freezing…

Q: Consider a solution composed of toluene (C7H8) and benzene (C6H6) with volumes 50 mL and 125 mL,…

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Q: What is the cancentration of 0.56 mole of Mcgnesium Chiaide CMgCR) in 50.0 mililiters of water?

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Q: Which of the following is a false statement about permanent hardness in water? A. Permanent hardness…

A: Multiple Question on permanent hardness in water

Q: Q2/prepare 500 ml, 5N H2SO4 solution from original concentrated solutic

A: Normality of original 98% concentrated H2SO4 = 36.8 N1 x V1 = N2 x V2

Q: The boiling point of benzene, C,H6, is 80.100 °C at 1 atmosphere. K,(benzene) = 2.53 °C/m In a…

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Q: Why do Sedimentation and filtration is important in water treatment? Is a period of timeimportant in…

A: Any process that improves the quality of water to make it suitable for a specific end-use is known…

Q: boiling point of 500 mL of chloroform if 10.50 grams of caffeine

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Q: 1. What is the Molarity, Normality, and Molality of H,PO, in a reagent-grade bottle that is 86%…

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Q: What volume of dilute nitric acid of density 1.11g/mL and 19% nitric acid by weight contains in 10g…

A: Given: density of nitric acid =1.11g/ml    With this information, we will first calculate the volume…

Q: folarity of HC1 Standard Solution olume (mL) HC1 Standard Solution o. of moles HCl =No. of moles H…

A: We have to find the molarity of NaOH for given reaction in trial 2

Q: What is the unit for the freezing point constant? Group of answer choices °C m °C/m M

A: 0C is a unit of temperature.

Q: cite literature that gravimetric analysis is used to test the purity of any soup product

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Q: The following replicate molarities were obtained when standardizing a solution: 0.1067, 0.1071,…

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Q: Solubility Curve for KNO3 150 140 130 120 110 100 KNO3 90 80 70 60 50 40 30 20 10 10 20 30 40 50 60…

A: We have to tell how much KNO3 can be dissolved in 100 g of water .

Q: 2. Why is there a difference in the conductivity of pure solid NaCl and of the 1.0 M NaCl solution?

A: Interpretation: The reason behind the conductivity of pure solid NaCl and of the 1.0 M NaCl solution…

Q: How many moles of solute particles are present in 1.64 mL of 0.458 M K2SO4?  (the answer is 2.25E-3…

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Q: stock solution was prepared by disse stock solution of caffeine and dilut ight of Caffeine = 194.2…

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Q: What are the true/theoretical density values of each concentration of NaCl: 15%, 20%, and 25%?.…

A: The maximum achieveable density of a substance is known as theoretical density. It is also known as…

Q: What weight of HCl is present in 30mL of hydrochloric acid of specific gravity 1.19 and contains…

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Q: Calculate the temporary and total hardness of a water sample containing Mg(HCO3)2= 73mg/L,…

A: Given :           Mg(HCO3)2 = 73 mg/L           Ca(HCO3)2 = 162 mg/L           MgCl2 = 95 mg/L…

Q: Write the chemical reaction for the incongruent dissolution of spodumene.

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Q: A water contains 180 mg/l Ca, 75 mg/l Mg, 160 mg/l HCO3', and 150 mg/l CO2, all expressed as CaCO3.…

A: Total hardness TH = Ca in mg/L ×Eq. of CaCO3Eq. of Ca+  Mg in mg/L ×Eq. of CaCO3Eq. of Mg…

Q: The volume of hydrochloric acid required to prepare an approximate solution of 0.2 normal…

A: Normality is no. Of gram equivalent of solute, present per litre of the solution.

Q: In the preparation of 1,200 mL of 70% alcohol from stock absolute alcohol solution, what is the…

A: Here we will consider v/v % concentration, i.e. 70 % alcohol solution implies out of 100 mL solution…

Q: Give a fundamental description of the recrystallization process. Explain why it is required and how…

A: Recrystalization is a purification technique not a separation technique.

Q: The boiling point of diethyl ether, CH3CH,OCH,CH3, is 34.500 °C at 1 atmosphere. K,(diethyl ether)=…

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Q: Is the sebacoyl chloride solution more or less dense than the hexamethylenediamine solution? More…

A: Sebacoyl chloride solution remains at the top of hexamethylenediamine solution.

Q: explain the principle on how to determine the concentration of brine using salometer

A: In the question it is given to explain the principle to determine the concentration of brine using…

Q: Calculate the temporary and permanent hardness of water sample containing Mg(HCO3)2= 7.3mg/L,…

A: Given data: Amount of the hardness causing  salts (mg/L) is given:  Mg(HCO3)2 =7.3 mg/L Ca(HCO3)2 =…

Q: Dilution is necessary for commercially available acids such as HNO3, H2SO4 etc so that the strength…

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Q: The following replicate molarities were obtained when standardizing a solution: 0.1067, 0.1071,…

A: Given   Molarites : 0.1067 ,0.1071, 0.1066, and 0.1050. Confidence = 95%

Q: Assuming that the volumes are additive, what volume of water must be added to 35mL of 15%  KOH to…

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Q: Why do Sedimentation and filtration is important in water treatment? Is a period of time important…

A: The sedimentation process is most important process which is imposed for the reduction of…

Q: The boiling point of diethyl ether, CH3CH,OCH,CH3, is 34.500 °C at 1 atmosphere. K4(diethyl ether) =…

A: Given: Boiling point of pure solvent = 34.500°C Boiling point of solution = 34.935°C Mass of solute…

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.