This work reports the solubility of mesalazine (5-ASA) in mole fraction terms (x(1,T)) in mono-solvents of polyethylene glycol (PEG) 400, 1-propanol and 2-propanol along with their binary mixtures in different mass fractions of PEG 400 at 293.15-313.15 K and atmospheric pressure which ...
Let the mass of each gas present in the mixture be mi. Then the mass balance gives the total mass of the mixture mm as (12.1)mm=m1+m2+⋯+mN=∑i=1Nmi The corresponding number of moles ni of gas i with molecular mass Mi can be determined from Eq. (1.9) as (1.12)ni=mi/Mi ...
Using the specific heat of water of 4.2 J/g/∘C , the heat of combustion formula gives us the molar heat of combustion for ethanol. So, 1g of ethanol gives -29.78 kJ of energy or, in molar mass, 1,370 kJ/mol. For other alcohols, values are: Methanol: -732 kJ/mol Propanol: -...
Orthobaric liquid densities and excess volumes for binary mixtures of low molarmass alkanes and nitrogen between 105 and 140 K A magnetic suspension densimeter has been used to determine orthobaric liquid densities of gravimetrically prepared binary mixtures of the major components... MJ Hiza,WM ...
The molality of a solution The molality or molal concentration of a solution is defined as the mole of the solute which is dissolved in 1 kg of the solvent to make the solution. Unit: {eq}mol.kg^{-1} {/eq} or m {eq}Molality\ (m)=\frac{Mass\ of\ the\ solute...
ChemicalCo.1.Thepuritiesofthematerialswerede. terminedbygaschromatography:2-methyl—·3·-buten—· 2一ol,99.60%(bymass),methanol,99.99%(bymass), ethanol,99.98%(bymass),propanol,99.97%(bymass) andbutanol,99.98%(bymass). Refractiveindices weremeasured with an A b b e typ e refr act...
End group analysis is the most important absolute method of obtaining number-average molar mass values for polymers of the step-growth polymerization type. A great number of methods are available which primarily differ in the detection of the end group concerned. Special chemical methods based on ...
SET-LRP of n-butyl acrylate (nBA) and 2-ethylhexyl acrylate (EHA) initiated with bis(2-bromopropionyl)ethane (BPE) to synthesize high molar mass poly(nBA) and poly(EHA) was carried out in binary mixtures of 2,2,2-trifluoroethanol (TFE) or 2,2,3,3-tetrafluoropropanol (TFP) with DMSO...
The structures of the amino alcohols considered are shown in Fig. 1. The main characteristics of the amino alcohols used are presented in Table 1. The mass fraction purity is reported according to the certificates of analysis given by the suppliers and the substances were used without further pu...
Because of its cyclic and diamine characteristics, the reactivity and solubility of piperazine are higher than other amines. The reaction kinetics, mass transfer and solubility of carbon dioxide in a single or mixed aqueous solution of piperazine have been studied by various researchers [2], [3],...