1. What are the experimental uncertainties in preparing a stock solution? 2. What are the experimental uncertainties in preparing a solution by diluting a stock solution? 3. What is the effect of temperature on the accuracy of the concentrations? Why?
Q: Describe how you would distinguish experimentally between apure substance and a true solution.
A: Pure substances are substances that are made up of only one kind of particles and has a fixed or…
Q: What must be the normality of a solution of silver nitrate so that each milliliter shall be…
A: In the given question we have to find the normality of silver nitrate and the normality is given by…
Q: why distilled water is used for standard solution?
A: A solution is made up of solute and solvent. Solute is present in small amount and solvent is…
Q: What are two things that you could do to change an unsaturated solid/liquid solution into a…
A: Unsaturated solids/liquids are those compounds in which double or triple bonds present between two…
Q: Describe how would you prepare 750 mL of 0.362 M Barium hydroxide
A:
Q: The fundamental condition for predicting solubility, stated as polar solutes are soluble in polar…
A: Answer is explained below. According to the solubility rule "like dissolves like" we know that polar…
Q: An aqueous ethanol solution (400 mL) was diluted to 4.00 L, giving a concentration of 0.0400 M. The…
A: Given :- Initial volume of solution = 400 mL Final volume of solution = 4.00 L Final…
Q: 2.A student realizes they forgot to add boiling stones to their distilling flask. The solution is…
A: Boiling stones are used to prevent loss of product. it cannot allow the solvent spill over the flask…
Q: How do you address a liquid with a less solute concentration? What solution has completely dissolved…
A: The solution of above Questions are given below.
Q: Q1. What do you notice with the boiling point and freezing point of the different solutions?
A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: How the solubility of gases in liquids effected by temperature and pressure?
A: Gases and liquids are the state of matter. Gaseous particles are far away from each other as they…
Q: Calculate the molality of a solution containing 0.125 mol of a non-electrolyte solute dissolved in…
A: The molality is used to represent the concentration of solute present in a given solvent. Molality…
Q: Why does grinding solid crystals increase the rate of dissolving of a solid solute in water?
A: A solution is a homogeneous mixture of solute and solvent. where solute in a small quantity and…
Q: The step in solution formation in which the solute is torn apart by the solvent is known as:
A: The Step in which solute is torn is called
Q: Given these values, find the initial mole fraction and initial mass % of the solute (NaCl) Solvent…
A: Mole fraction of the solute can be written as - Mole fraction of solute NaCl = moles of solute/moles…
Q: of
A: This question is related to polymers.
Q: You are given an 18% solution of sodium imidazole. What mass of imidazole (in g) would be in 20 mL…
A:
Q: Draw an outline of the recrystallization process- Assume all types of Impurities(Soluble, Insoluble…
A: Recrystallization is defined as a technique which is used to purify the solid compounds.
Q: What is fractional distillation and distillation with the use of a fractionating column; how it is…
A: By selective boiling and condensation, it is possible to separate components in a liquid mixture.…
Q: 1. Using the dilution formula, compute for the volume of HCI stock solution that is needed to…
A: Answer-1 Volume of required solution Vrequired=500mL Concentration of required solution…
Q: What is the difference between evportation and crystallization in terms of separating soluble…
A: Answer - evportation - Evaporation happens when a liquid turns into a gas. It can be easily…
Q: Why is the curve for the freezing of a solution different in slope from the freezing of the solvent?
A: The solvent is in pure form. But in solution, there is solute along with solvent molecules
Q: Table 11.9 (data) Observation Sample Original solution Heated solution…
A: First Column is filled by observing original solution. The original solution contains insoluble…
Q: What is the best definition of a supersaturated solution? Select one: O a. A solution containing…
A: Solution : Homogeneous mixture of two or more than two components is called solution. The particle…
Q: 1. What will be the primary consideration in solving for concentration of solutions? 2. What is the…
A: 1. The primary consideration to determine the concentration of solution is that what amount of…
Q: Which substances are molecular substances? water in glass
A: Molecular substances are substances composed of two or more atoms joined together by a covalent…
Q: What is solubility? and Explain this rule “like dissolves like”.
A: Solubility is physical property.it is defined as maximum number of substance (called as solute)…
Q: 22. How much concentrated 12 M hydrochloric acid is needed to prepare 100.0 mL of a 2.0 M solution?…
A:
Q: Calculate the molality of a solution containing 0.25 mol of solute dissolved in 750 g solvent.
A: Molarity is defined by the ratio of the number of moles of solute to the mass of solvent.
Q: A potasium carbonate solution is 14.6% KCO3 by mass and has a density of 0.68 g/mL. Calculate…
A: Molarity is defined as the moles of solute per litre of solution. Note : KCO3 is wrong. Instead of…
Q: 1. What are the factors affecting the solubility of solutions? Give 4 factors 2. Give 5 importance…
A:
Q: What is the difference between solvation and dissociation. Use the documents below to support your…
A: To distinguish between solvation and dissociation.
Q: What mass of NaCl is dissolved in 400. g water in as 0.250 m solution?
A: 1- First calculate the moles of NaCl : Mass of solvent = 400g × ( 1kg / 1000g ) We know that, 1kg…
Q: Describe experiments that would demonstrate some saturated solutions and some unsaturated solutions.
A: An unsaturated solution is a chemical solution in which the solute concentration is lower than its…
Q: One of the major limitations of Beer's Law is that it only explains the behavior of dilute…
A: Beer' law gives a relationship between the intensity of UV radiation and the concentration of the…
Q: A sample of potassium nitrate (49.0 g) is dissolved in 101g of water at 100˚C, with precautions…
A: All known compounds can be dissolve in certain solvents whereas they remain insoluble in other…
Q: True or False Electrolytes can affect the vapor pressure of the solvent by lowering it.
A:
Q: a 1 mL stock sample is added to 9mL of diluent to make solution A, and then 1mL of solution A is…
A: Dilution is calculated as: Dilution = ViVf where Vi is the volume of stock taken, Vf is the volume…
Q: 9. Calculate the mass percent of sodium bicarbonate in the solution. 10. Calculate the mole fraction…
A: For the solution of question number 9 and question number 10 we will need to find the mass and mole…
Q: What is the purpose of stirring a solution while it is being heated? Select one: To encourage sudden…
A: By stirring the solution heat is uniformly distributed through the solution.
Q: Why is the solution filtered while it is hot?(Explain in 5 sentences)
A: Filtration is a technique in which the impurities particles are separated using a filter paper over…
Q: Give a fundamental description of the recrystallization process. Explain why it is required and how…
A: Purification refers to separate a compound from impurities contained in it. Various processes…
Q: CHAPTER 8 - SOLUTIONS Submit Qu O Previous Page 9 of 35 E Next O References Use the References to…
A: Since at 100 degree Celsius, the maximum amount of salt that will dissolve in water is = 28.9 g /…
Q: Define Henry’s law about solubility of a gas in a liquid.
A: Henry's law According to this law, the solubility of a gas in a liquid or mass of gas dissolved per…
Q: Discuss (with drawing) the behavior of nicotine water system, and verify its critical solutions…
A: Discuss (with drawing) the behavior of nicotine water system, and verify its critical solutions…
Q: MA 1.00 12.0 14.0 15.9 22.9 28.0 30.9
A:
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- During the preparation of viscose rayon, cellulose is dissolved in a bath containing sodium hydroxide and later reprecipitated as rayon using a solution of sulfuric acid. Name the salt that is a by-product of this process. Rayon production is, in fact, a significant commercial source forthis salt.The boiling point of water, , is 100.000 °C at 1 atmosphere. In a laboratory experiment, students synthesized a new compound and found that when 11.92 grams of the compound were dissolved in 298.4 grams of water, the solution began to boil at 100.113 °C. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight they determined for this compound?What is the molarity of a solution in which 150g of CaO are dissolved in 1900mL of solution? (Use thefollowing given information: overline MW:Ca=40g/mol , O=16g/molA. 1.41 mol/LB. 0.0014 mol/LC. 0.0014 MD. 1.41 m
- Solution A is prepared by dissolving 5.01 g of sodium chloride in 29.0 g of water, and Solution B is prepared by dissolving 0.99 g of sodium chloride in 17.0 g of water. Which of the following statements is true? Solution A is more conductive than Solution B Solution B is more conductive than Solution A Neither solution is conductive. Solution A and B have the same conductivity. None of the above cases is correct.Solution A is prepared by dissolving 1.61 g of sodium chloride in 50.0 g of water, and Solution B is prepared by dissolving 4.45 g of sodium chloride in 19.0 g of water. Which of the following statements is true? Solution A is more conductive than Solution B Solution B is more conductive than Solution A Solution A and B have the same conductivity. Neither solution is conductive. None of the above cases is correct.An unknown liquid has a freezing point of 25.5oC, however, it absorbs H2O (as impurity) on exposure to humid air. If the freezing point of a 125g sample of the liquid is 24.59 oC, how many grams of H2O are present in the sample? Kf values of the liquid and water are 4.68 oC/m and 1.86 oC/m respectively.
- An aqueous solution of iron (II) sulfate (FeSO4) is prepared by dissolving 3.30 g in sufficient deionized water to form a 100.00 mL solution. Calculate the molarity of the solution. Give Value and UnitHow does CrBr3(s) break up in solution? Write subscripts and superscripts as normal numbers and do not include spaces in your answer. Do not include states like (aq) or "1" in front of single atoms or charges. For example, the answer for NiCl3(s) would be Ni3++3Cl- For example, the answer for Sb3(PO4)5(s) would be 3Sb5++5PO43- Possibly relevant polyatomic ions: CN-,OH-, NO3-, NO2-, ClO3-, ClO4-, CO32-, SO42-, CrO42-, Cr2O72-, PO43-, PO33- Screen Reader User: For example, the answer for NiCl3(s) would be Ni3++3Cl minus For example, the answer for Sb3(P O4)5(s) would be 3Sb5++5PO43 minus Possibly relevant polyatomic ions: CN minus,O H minus, N O3 1 minus, N O2 1 minus, Cl O3 1 minus, Cl O4 1 minus, C O3 2 minus, S O4 2 minus, Cr O4 2 minus, Cr2 O7 2 minus, P O4 3 minus, P O3 3 minusa) convert 0.750 moles of CuCl2 to mass in grams. b) 25cm3 of sodium hydroxide solution of unknown concentration was filtrated with dilute sulphuric acide of concentration of 0.050 moldm-3 . 20cm3 was required to neturalie the sodiu hydroxide. calculate the concentration of the sodium hydroxide solution in moldm-3 nb. write the balanced equation use mole ratio to covert moles of sulphuric acid to moles of sodium hydroxide place moles in volume given cm3 then convert cm3 to dm3
- The boiling point of diethyl ether, , is 34.500 °C at 1 atmosphere. In a laboratory experiment, students synthesized a new compound and found that when 12.59 grams of the compound were dissolved in 259.3 grams of diethyl ether, the solution began to boil at 35.045 °C. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight they determined for this compound? g/molCalculate the enthalpy of solution ( H for the dissolution) per mole of NH4NO3 under the conditions described in Example 5.6.Will the calculated Molarity of NaOH be too high or too low or unaffected if the following happen: When you answer the question, consider how the situation affects the calculation of molarity of NaOH and moles NaOH, which is calculated from the mass of KHP. For each answer, you must supply a clear explanation for your answer. Often times, students will restate the facts rather than explaining why they chose the answer they chose. a) You add the weighed KHP to a flask containing a 60mL of water rather than 50 mL of water. Explain. Your answer must contain a well-thought-out and clearly written explanation. b) The buret is still wet with water on the inside when you add your NaOH solution. Explain c) The KHP is wet when you weigh it. Explain. d) You titrate past the equivalence point by 0.50mL Answer a-d