NaOH mole fraction

What volume of 0.010 M NaOH(aq) is required to react completely with 30. g of an aqueous acetic acid solution in which the mole fraction of acetic acid is 0.15 ... 

Use the heat of solution data in Table B.IO and solution heat capacity data to (a) calculate the enthalpy of a hydrochloric acid, sulfuric acid, or sodium hydroxide solution of a known composition (solute mole fraction) relative to the pure solute and water at 25 C (b) calculate the required rate of heat transfer to or from a process in which an aqueous solution of HCl, H2SO4, or NaOH is formed, diluted, or combined with another solution of the same species and (c) calculate the final temperature if an aqueous solution of HCl, H2SO4, or NaOH is formed, diluted, or combined with another solution of the same species adiabatically. Perform material and energy balance calculations for a process that involves solutions for which enthalpy-concentration charts are available. 

What is the mole fraction of NaOH in an aqueous solution that contains 22.8% NaOH by mass ... 

Calculate the mole fraction of NaCl, CaCl2, and NaOH in the solutions listed in the previons problem. 

An industrial-strength drain cleaner contains 5.00 kg of water and 5.00 kg of NaOH. What are the mass (weight) fraction and mole fraction of each component in the bottle of water ... 

To cause the solution to boil, the partial pressure must be raised to 1 atm. For the same mole fraction of NaOH, this means raising the vapor pressure to... 

As expected, fig increases and fi decreases with increasing extent of reaction. For the samples prepared using aqueous NaOH, the observed sequence lengths are in reasonable agreement with those expected for a random copolymer displaying Bernoullian statistics (Table III) (2). The random copolymer sequence lengths were calculated using Equation 6, where Pg is the mole fraction of dichlorocyclopropane units. 

A glass flask provided with a gas outlet is filled with 80 g. (0.153 mole) of Cl and 30 g. (0.135 mole) of IF5. The gas outlet is connected via short rubber tubes to several gas traps cooled with liquid nitrc en. Agitation of the vessel produces v%orous evolution of gas. When the reaction subsides, the system is heated for 30 min. at 90-100°C. The condensate in the gas traps is then washed with 5% NaOH and fractionated. The yield is 90%. 

Effect of mole fraction of NaOH in the mixture of Ca(OH) z and NaOH, R. 

Figure 6 shows SEM photographs of magnesium hydroxide particles and indicates that the ratio of agglomerated particle to prim particle increases with increase in mole fraction of NaOH in the mixture of Ca(OH) 2 and NaOH, R. 

For both carbamatation of CHA and DEA and carbonatation of NaOH, the reactor operated in open system with gas chromatographic analysis at reactor entrance and exit. The inlet CO2 mole fraction varies between 2 and 4 %. 

Figure 7. Molar volume in dependence of concentration (plotted in mole fractions x(NaOH)) for 673 K. The isobar for 228.5 MPa is obtained from interpolation. Arrows indicate the excess volumes [73]...

ILLUSTRATIVE EXAMPLE 15.2 Refer to the previous example. Calculate the mole fraction NaOH leaving the concentrator (and entering the cooling unit)... 

Ammonia NaOH NOeCOs 40 10 X 10- 2 0.5x 10- 10 2x 10- Solubility parameter (cal/cm ) 50-60 50-60 50-60 SolubiiiiY in hexane (mole fraction) Solubility in water (mole fraction)... 

For example, suppose you wish to find the mole fraction of the solvent and of the solute in a solution that contains 215 g of water and 44.0 g of sodium hydroxide (NaOH). First determine the number of moles of solute and solvent by dividing each mass by its molar mass. 

Methyl-2-pentanol [108-11-2] M 102.2, b 131-132", d 0.810, n 1.413. Washed with aqueous NaHC03, dried and distd. Further purified by conversion to the phthalate ester by adding 120mL of dry pyridine and 67g of phthalic anhydride per mole of alcohol, purifying the ester and steam distilling it in the presence of NaOH. The distillate was extracted with ether, and the extract was dried and fractionally distd. [Levine and Walti 7 Bio/ Chem 94 367 1931],... 

Figure 2. Oxidation of kraft lignin fractions in dilute aqueous alkali dissolved in 0.2N NaOH) 2 mole equivalents alkali based on MW 1000) 70°C.

Kraft Lignin Fractions. 5 grams were dissolved in 50 ml. 0.2N NaOH, corresponding to 2 mole equivalents alkali per 1000 grams lignin. 

The solution will have a very strong alkaline reaction, since it contains a large fraction of 1 mole each of ionized NaOH and of ionized secondary sodium phosphate, Na2HPC>4. The OH- ions thus formed check the hydrolysis of the secondary sodium phosphate but if solid secondary sodium phosphate is dissolved in water, hydrolysis of this salt ensues to a sufficient extent to make the solution alkaline to litmus. 

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