What is water hardness? Differentiate temporary from permanent water hardness

Q: Select the conditions where gas solutes have the highest solubility in water. Select those that…

A:

Q: How much 5M HNO3 is required to make t 100 mL of .100 M HNO3 10 mL of 2.5 M HNO3 2.) neutral…

A: In the above problem we have to prepare HNO3 solution such that it concentration will be same as…

Q: Which one is an example of a standard solution? 1. Sugar solution 2. Basic solution 3. Acidic…

A: A homogeneous mixture of two or more substances is known as a solution. The species which present in…

Q: (d) 50.0 mL of 0.0500 M ethylenediamine with 0.100 M HCI (e) 50.0 mL of 0.0400 M citric acid with…

A:

Q: 1. Which method can be used to remove temporary hardness but not permanent hardness from a sample of…

A: (1) Given methods are -  A. Washing sodaB. Ion-ExchangeC. Boiling    (A). Washing soda method -  In…

Q: Prepare 1 liter of 0.5M sulfuric acid from a concentrated aqueous solution. Sulfuric acid density is…

A: H2SO4 We have to determine the concentration of H2SO4 first and then dilute to prepare 1 L of 0.5 M…

Q: A student observes crystals at the bottom of a flask that contains a solution of LiBr in water.…

A: Interpretation: We have to check whether crystals will be forming or not when LiBr is taken in…

Q: List at least 5 limitations of using distillation as a method of purification

A: Distillation Process :* Distillation is the process of separating the substance or components from…

Q: 3 Ways to separate Alcohol, water, diesel and blood and its step by step procedure

A: 1) Centrifugation- Blood is mostly water but the platelets and cells in blood can be separated by…

Q: Write short note on -hardness of water

A: Hard H2O contains an appreciable quantity of dissolved minerals (like Ca and Mg). Soft H2O is…

Q: Choose the substance that is classified correctly? O NaF is a basic salt in aqueous solution O AICI,…

A: When a salt anion is formed from a strong base and a weak acid, then the resulting salt is basic as…

Q: What does the process of recrystallization accomplish? 1) Place toxic chemicals into pure materials…

A: Recrystallization is the process of purification of organic compounds. Hence, the process of…

Q: The phenol concentration in a water solution is 20 ppm and the density of this solution is 1.1…

A: In this question density does not have any use because it is given to determine the ppm in term of…

Q: 1. How do liquid solution form? 2. Why is solutions be expressed in correct concentration?

A: Given :  1. How do liquid solution form? 2. Why is solutions be expressed in correct…

Q: A sample of water contains a level of NH4+, Ca2+, dissolved chloroform and bacteria. Design a method…

A: A sample of water can contain many ions and wastes that have to be removed before consumption.…

Q: use cleaning solutions that eventually become spent and must be disposed of properl

A: Solutions are made of solute and solvent. It is a homogeneous mixture. The solute(which gets…

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: Weigh out 5g of table salt. Dissolve it in 50mL of distilled water in a container using a stirrer…

A: Given information is as follows: The mass of table salt = 5 g The volume of distilled water = 50 mL…

Q: # Solutions Overall dilution Concentration factor (relative to the original sample) (0.00998M )…

A: By help of Molarity formula, we can calculate the new concentration or Molarity of the new Solution.…

Q: A stock standard of uric acid contains 100 mg/100 ml. A working standard is made by diluting the…

A: Stock standard of uric acid contains 100 mg/100 ml.  Which means 100 ml stock solution contains 100…

Q: A water sample contained the following impurities in ppm: CaCO3 = 20 CaSO4 = 13.6 MgCO3 = 8.4 MgCl2…

A:

Q: From daily life tell how hardness in water effects

A: Hardness of water is defined as amount of soluble salts per parts of millions in water. Some bad…

Q: Preparing solution. Weigh out Sg of table salt. Dissolve it in 50mL of distilled water in a…

A: The concentration of a compound can be expressed in terms of percent mass per volume.  Write the…

Q: A solution had 12 g of dextrose dissolved in 500 mL of water. Calculate the concentration of the…

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

Q: The analysis of a water is as follows Ca+ 78 Alkalinity SO42- C pH 282 96 8.1 Nat- Mg2+ 30 K+ Specie…

A: Due to technical error ,unable to provide you the solution. Please resubmit the question once again

Q: A sample of water is found to contain Ca(HCO3)2 = 40.5, Mg(HCO3)2 =46.5, CaSO4=32.1, CaCl2=22.45,…

A: The water hardness is the presence of dissolved carbonate, bicarbonate, chloride, sulfide, or…

Q: 100 mL of 0.1 M sodium fluoride d 100 mL of 0.1 M sodium fluoride uoric acid and 50 mL of 0.1 M NAOH…

A: Last two are not buffer solution because acid mixed with acid ( HF + HCl ) and base mixed with base…

Q: What is the difference between hard and soft water?

A:

Q: A sample is analyzed for Lead. Is the ppm in the dry sample containing Lead greater than, equal, or…

A: A question based on qualitative analysis, which is to be accomplished.

Q: How can we remove hardness from water? write any one method

A: The hardness of water are  two types: 1.Temporary Hardness :The presence of magnesium and calcium ,…

Q: 5. Give 10 examples of solutions commonly found in your home. Identify the solute and the…

A: 1. Answer -  10 examples of solutions commonly found in your home -   coffee or tea. sweet tea or…

Q: the differences between a Stober procedure and a water/oil emulsion procedure

A: In this question we have to describe the differences between a stober procedure and a water oil…

Q: You are provided with a stock solution of 100. ppm quinine. All solutions will be prepared in 50-mL…

A: Given data is: Concentration of H2SO4 = 0.05 M Volume,V1 = 50 mL a.   C1V1=C2V2  (100.0 ppm) (V1) =…

Q: Which of these interactions that hold hair strands together is/are pH sensitive? I. À salt bridge A…

A:

Q: What is meant by water hardness? Explain the difference between temporary and permanent hardness.

A: Water is mainly divided into hard and soft water. The two metal cations such as Ca2+ and Mg2+causes…

Q: 1-melting point helps to identify unknown samples. true or false 2-the reaction of one mole of hydro…

A: 1-melting point helps to identify unknown samples. True Reason: melting or depression in melting…

Q: Select 'True' or 'False' for each of the following items:  When salt is sprinkled on an icy road,…

A:

Q: a. 10 mL of 0.1 M HCI and 20 mL of 0.1 M NH3 b. 10 mL of 0.1 M HCI and 20 mL of 0.1 M NaC2H3O2 C. 10…

A: Since you have posted a question with multiple sub parts, we will solve first three sub parts for…

Q: You are trying to make a 6mL solution with a agar concentration of 0.2mg/ml. The stock solution is…

A: M1V1=M2V2 is the dilution formula where M1, V1, M2 and V2 are concentration of stock solution,…

Q: convert glucose concentration in g/100ml from 0.144mM

A: The given information is: Concentration of Glucose = 0.144mM Converting mM to M: 1 mM = 0.001 M…

Q: Calculate the volume needed to be removed from a 4.00 M stock solution to make 250.00 mL 0.350 M…

A: Given : Molarity = 4 M Final volume = 250 ml Final molarity = 0.350M

Q: Calculate the concentration of a solution made from diluting 70.0 mL of 1.05 M HCl to 430. mL.

A: For dilution :- M1V1 = M2V2  M1 =initial molarity  M2 = final molarity  V1 = initial volume  V2 =…

Q: 5. The mineral analysis below was reported for a water sample. Calcium 90 Chloride 120 Magnesium 30…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: . Write short note on- hardness of water.

A: Water has two categories namely, SOFT WATER- It is obtained from rain. It forms lather with soap.…

Q: Aromatic Water Poppermint water (Simple solution method) Formula Poppermint ol, Purifled water, To…

A: Answer - peppermint water - Procedure - (1) forming a carrier solution after mixing proper amount of…

Q: What is the difference between analytical grade salt ( NaCl) and store-bought salt

A: Analytical grade refers to the purity of the substance. The pure substance are used in laboratories…

Q: prepare a 10% 100mL of NaCl solution.

A: It is not mentioned that should we have to prepare 10% m/v solution or 10% w/w solution. so, let us…