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. a). Find the mass of nonelectrolyte solute dissolved in 315 g water with boiling point temperature of 100.45 ⁰C. The molar mass of solute is 46 g/mole Kb = 0.52 ⁰C/m and Tb = 100 ⁰C
100.45×315/100×0.52= 608.5g
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The density at 20 0 C of a 0.500 M solution of acetic acid in water is 1.0042 g/mL. What is the molality of the solution? The molar mass of acetic acid, CH3CO2H, is 60.05 g/mol.
Let the volume of the acetic acid solution be 1 litre = 1000 mlthus, moles of acetic acid = molarity*volume of solution in litres = 0.5*1 = 0.5 molesnow, molar...
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vinegar contains 5.00% acetic acid by mass and has a density of 1.01g/ml. What mass(in grams) of acetic acid is present in 5.00 L of vinegar?
The mass of vinegar is m(vinegar) = V(vinegar) * d(vinegar) = 5 L * 1.01 g/mL = 5050 g The mass of acetic acid is m(CH3COOH) = w(CH3COOH) * m(vinegar)...
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At 298 K, a 0.100 M solution of acetic acid is 1.34% ionised. Calculate the ionisation
constant of acetic acid.
Ka = ɑ^2*C/(1 - ɑ); ɑ = 1.34% or 0.0134; C = 0.1 M. Ka = 0.01342 × 0.1 / (1 - 0.0134) = 1.8 × 10^{-5}. Answer: 1.8 ×...
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If you take 109.7 mL of a 40.3 %(v) vinegar (acetic acid) solution, how many mL of acetic acid do you have?
v = Vsolute/Vsolution;Vsolute = Vsolution*v;Vsolute =109.7 *0.403 = 44.2 mL.Answer: 44.2 mL.
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What is the pH of a solution containing 0.020 mol sodium hydroxide and 0.100 mol acetic acid dissolved in 100.0 mL of water, given that the pKa of acetic acid is 4.75?
In the solution, sodium hydroxide and acetic acid neutralize each other according to the equation:CH3COOH + NaOH → CH3COONa + H2OAs a result, as 0.020 mol sodium hydroxide interact with 0.100 mol acetic...
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If 5.0 mol of N2O4 is placed in a 1.0L closed container at 150C, what will be the concentrations of N2O4 and NO2 at equilibrium? K=4.5
Solution:The initial concentration of N2O4:Co(N2O4) = n(N2O4) / V(N2O4) = 5.0 mol / 1.0 L = 5.0 MCo(N2O4) = 5.0 MN2O4(g) = 2NO2(g)The equlibrium constant expression for the reaction:K =...
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6350 J of heat is required to raise the temperature of a sample of AlF3 from 150C to 750C. What is the mass of the sample?
According to the heat law:Q = cn(T2 - T1)where Q - absorbed or released heat, c - heat capacity (75.1 J/mol·K), n - number of moles, T2 - final temperature...
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A photographic "stop bath" contains 160mL of pure acetic acid. HC2H3O2(1) in 650 mL solution. What is the v/v concentration of acetic acid in the stop bath?
Solution:acetic acid = HC2H3O2 - soluteVolume of acetic acid = 160 mLVolume of the solution = 650 mLv/v concentration = (solute volume / volume of the solution) × 100%v/v(HC2H3O2) =...
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A substance contains 54.7 g of water and 12.2 g of acetic acid. Is the acetic acid the solute, solvent, or solution?
The acetic acid is a solute
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