Let's get them all into K, simple 0k is -273°C so 273k is 0°C as both are linear in growth, just different start points. so 273 + 1064 is the...
1 Answers 1 viewsYou often see in the literature the phrase, $"recrystallized to constant melting point"$; i.e. a material is successively recrystallized until a consistent melting point is achieved. Often, after repeat recrystallizations,...
1 Answers 1 viewsI would guess, $H_2Te$ $>$ $H_2Se$ $>$ $H_2S$ $"<<"$ $H_2O$ with respect to melting point. But as a chemist, as a physical scientist, you are required to interpret data,...
1 Answers 1 viewsHydrogen is a strong bond, therefore, it produces a lower evaporation rate and thus, a lower vapor pressure.
1 Answers 1 viewsHydrogen Bonding is a type of dipole-dipole interaction. This means that there are permanent partial charges on hydrogen and oxygen in water, so they attract each other from separate molecules....
1 Answers 1 viewsConsider water, $OH_2$. This is a very low molecular weight material that has quite an elevated normal boiling point. The strength and persistence of intermolecular hydrogen bonding is responsible for...
1 Answers 1 viewsHydrogen bonding occurs where HYDROGEN is bound to a strongly electronegative element, i.e. hydrogen is bound to fluorine, nitrogen, or oxygen. In $"fluoroform"$, the hydrogen is bound to carbon not...
1 Answers 1 viewsThe melting points (and undoubtedly also the boiling points) of the nitro phenols reflect the degree of intermolecular hydrogen bonding. For $"orthonitrophenol"$, hydrogen bonding would be intramolecular, i.e. confined to...
1 Answers 1 viewsThe normal melting point of methanol is $-97.6$ $""^@C$. But here, clearly, we compare apples and oranges, by comparing a melting point, a transition from solid to liquid, to...
1 Answers 1 viewsWell, let's take the average using absolute temperature: $((54+265.7)*K)/2$ $=$ $159.9*K$ $=-113$ $""^@C$. The literature melting point of chlorine is $-101.5$ $""^@C$, so this estimate is a good first approximation....
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