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How much of 0. 3 AM start solution of sucrose what you need to make 150 mL dilution of sucrose at a final concentration 0.1
Molar mass of Sucrose = 342.2970.3 × 342.297 = 102.69= 150 - 102.69 = 47.31ml= 0.1 × 47.31 = 473.1ml
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*If equivalent conductance at infinite dilution of NaCl, HCl and CH3COONa are 126.45, 426.16 and 91.0 respectively, find the equivalent conductance of acetic acid at infinite dilution.*
λ CH3COOH = λCH3COONa + λHCl - λNaCl = 91 + 426.16 – 126.45 = 390.71
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Explain the following terms:
i) Integral enthalpy of solution
ii) Differential enthalpy of solution
iii) Enthalpy of dilution
I. Integral Enthalpy Of Solution is the heat absorbed or released when a solute is dissolved in a definite amount of solvent. The heat of solution depends on the nature...
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After performing a dilution calculation, you determine you need 25.0 mL of an aqueous stock to make 100.0mL of a new solution. How would this be prepared?
1.Find graduated cylinder and measure 25 milliliters of stock 2.Find another graduated cylinder or volumetric flask (100.0 mL) 3.Pour previously prepared 25 ml in a volumetric flask (100 ml) 4.Pour...
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120mL of water is added to 30mL of the 40% ethanol solution. What is the dilution factor? And, what is the concentration of the diluted solution?
1) Dilution factor refers to the ratio of the volume of the initial (concentrated) solution to the volume of the final (dilute) solution1, that is, the ratio of V1 to...
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25mL of the 40% ethanol solution is used to prepare the 10% ethanol. What is the final volume of the solution? And, how much water must be added to do the dilution?
Dilution factor refers to the ratio of the volume of the initial (concentrated) solution to the volume of the final (dilute) solution1, that is, the ratio of V1 to V2...
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Calculate the mass of potassium hydroxide, KOH, required to prepare a 200 mL solution that was diluted to give a concentration of 0.030 mol/L. The solution has a dilution factor of 5.
V1 = 200 mLC2 = 0.030 mol/LDilution factor = 5Solution:C1V1 = C2V2Dilution factor = C1/C2 = V2/V1Dilution factor = Final solution volume (V2) / Volume from stock solution (V1)Therefore,Final solution...
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Calculate volume of 2 molar sodiumhydroxide required for complete neutralization of 200ml of 3 molar sulphuric acid solution?
c(NaOH) = 2mol/L V(H2SO4) =200mL = 0.2 L c(H2SO4) = 3 mol/L V(NaOH) - ? 2NaOH (aq) + H2SO4(aq) = Na2SO4 (aq) + 2H2O (l) (1) Find amount of chemical...
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What volume of 17.8 M sulphuric acid solution would be needed to make 2.00 L of 0.200 M solution by dilution of the original, concentrated stock solution?
Proportion 1:0.2 mol – 1 Lx mol – 2 Lx = 0.4 mol is needed to make the new solutionsProportion 2:17.8 mol – 1 L0.4 mol – yy = 0.0225...
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Determine the volume of cement slurry required to set in the annulus of 20inch conductor pipe, and 107/8- inch casing. Total length of 20inch conductor pipe is 80feet for 107/8 inch section
Annular Volume bbls = (Dh^2 – OD^2) / 1029.4 x Length in feet, where Dh is the hole diameter.(20^2 - 13.37^2)/1029.4 = 0.2149Slurry volume = o.2149*80ft = 527 ft =...
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