What is the indicator of the number of ions in solution?
2 answers:
Answer:
The amount of solute added.
Explanation:
The number of particles in one mole is given by the Avogadro's number which is 6.022*. We denotes by L is the avogadro's number.
To calculate the number of ions in a solution:
Calculate the number of moles, by dividing the mass of sample by the molar mass of the compound, then calculate the formula and multiplying by avogadro's number( 6.022*).
The number of solute is directly proportional to number of ions. The higher the number of solute, then higher the number of ions and number of moles.
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Answer:
Four possible isomers (1–4) for the natural product essramycin. The structure of compound 1 was attributed to essramycin by 1H NMR, 13C NMR, HMBC, HRMS, and IR experiments.
Explanation:
Three synthetic routes were used to prepare all four compounds (Figure 2A). All three reactions utilize 2-(5-amino-4H-1,2,4-triazol-3-yl)-1-phenylethanone (5) as the precursor, whereas each uses different esters (6–8) to construct the pyrimidinone ring. Isomer 1 was prepared by reaction A, which used triazole 5 and ethyl acetoacetate (6) in acetic acid. This was the reaction used in syntheses of essramycin by the Cooper and Moody laboratories.3,4 Reaction B produced compound 2 (minor product) and compound 3 (major product), which were separated chromatographically. This reaction allowed reagent 5 to react with ethyl 3-ethoxy-2-butenoate (7) in the presence of sodium in methanol, under reflux for 24 h. Compound 4 was prepared by reaction C, which was obtained by reflux of 5 and methyl 2-butynoate (8) in n-butanol.
