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Benzoic Acid has a melting point of 122oC. If your sample did not melt even at 200oC, then you can only assume that the sample in Whole or Part was not Benzoic Acid. It must have been contaminated with some other compound with a much higher melting point.
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∙ 10y ago
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What is the colour and smell of benzoic acid?
Benzoic acid looks like a very clear white powder , crystalline flakes. It smells like urine and even the smell is very irritant to eyes ! Made the experience of putting it close to my nose ! Be careful.
Why ortho benzoic acid is more acidic than para osomer?
Nitro group (-NO2), having -I and -R effect, is an electron withdrawing and deactivating group. Due to both these effects, it decreases electron density around the -COOH group of substituted(ortho, meta & para) benzoic acids and releases H+ ions, making these acidic. The nitrobenzoic acid which releases H+ group more easily is the most acidic. Due to ortho effect, ortho acids are more acidic than all other substituted acids(even if an electron donating group is present at the ortho position. The only exception is -NH2 group, in which ortho- aminobenzoic acid is NOT the strongest acid). Regarding acidity of meta and para acids, consider I and R effects. Inductive effects of meta and para acids reduce electron density around -COOH group, whereas resonance does not occur at meta position. It only occurs at para position, making the nitro group at para position a more strong withdrawer of electrons. Thus para-nitro benzoic acid is more acidic than meta-nitro benzoic acid. In short, the higher acidity of p-nitrobenzoic acid compared to m-nitrobenzoic acid is attributed to its -I and -R effect.
What do acid do to topaz?
Most substances will react with some acid or another. Even glass will be dissolved by hydroflouric acid and even gold will dissolve in aqua regia. As for regular acids, I have put a sample of topaz in a hydrochloric acid solution and after three weeks, it was unchanged.
Why petrol does not catch fire in summer even when its flash point is 44 celsius and temperature of atmosphere is 50 Celsius?
because it is at atmospheric pressure vapour pressure is also very important
Why is the reaction between potassium and dilute acid not used to laboratory?
The reaction between potassium and a dilute acid or even just water (which is what an acid is diluted in) is very dangerous. On contact with the acid the potassium bursts into flame and may even explode, sending flaming molten pieces of potassium into the air.
What is the colour and smell of benzoic acid?
Benzoic acid looks like a very clear white powder , crystalline flakes. It smells like urine and even the smell is very irritant to eyes ! Made the experience of putting it close to my nose ! Be careful.
What would happen to the melting point of pure benzoic acid if 2-naphthol was mixed in?
The literature value of the melting point of pure benzoic acid is about 122.4 degrees Celsius, while the literature value of the melting point of pure 2-naphthol is close at 122 degrees Celsius. Nevertheless, the melting point of the benzoic acid should be depressed (go down) compared to the literature value if you were to add 2-naphthol because the sample you were testing would then be impure, even if that impurity does have a similar melting point. Also, the range over which the sample melts should get larger as well. Instead of melting within a degree or less, it may melt over the course of several degrees. So I just tested this in lab, and I can't promise that this is 50/50, but my melting point for 2-naphthol with Benzoic acid is 104.1-106.0 degrees Celsius This is a very basic answer, and the trend is true. However, with my organic chemistry professor, this answer would be followed by a blank look and "Why?" The best way to think of this is to look at the chemical structure of Benzoic Acid and 2-naphthol separate. Go ahead and Google it on a new tab. Now look at the molecule of the two together. And think: "What does the composite molecule have that the two alone don't?" Give up? Electronegativity. The more electronegative a molecule is the greater its reactivity. As in the compound molecule will melt easier than the two 'pure' substances.
What is para hydroxy benzoic acid?
HOC(CH)4COOH Tis is a cyclic molecule based on the benzene ring. The acid functional group is on carbon -1 of the ring , and ther hydroxy functional group is on carbon -4 of the ring. Because they are on opposite sides of the ring , they are described as 'para'.
How do you find volume in Celsius?
That would take some doing, since Celsius is not even a unit of volume. As a matter of fact, "Celsius" is not a unit of anything.
Which is hotter 10000 degrees Celsius or 5000 degrees Celsius?
10,000 degrees celsius. Source: School taught it to me even though I would think it is a no brainer.
What is body temperature in degrees Celsius?
It is 37 degree celsius Your body temperature for Celsius is 37 degrees Celsius.
Why ortho benzoic acid is more acidic than para osomer?
Nitro group (-NO2), having -I and -R effect, is an electron withdrawing and deactivating group. Due to both these effects, it decreases electron density around the -COOH group of substituted(ortho, meta & para) benzoic acids and releases H+ ions, making these acidic. The nitrobenzoic acid which releases H+ group more easily is the most acidic. Due to ortho effect, ortho acids are more acidic than all other substituted acids(even if an electron donating group is present at the ortho position. The only exception is -NH2 group, in which ortho- aminobenzoic acid is NOT the strongest acid). Regarding acidity of meta and para acids, consider I and R effects. Inductive effects of meta and para acids reduce electron density around -COOH group, whereas resonance does not occur at meta position. It only occurs at para position, making the nitro group at para position a more strong withdrawer of electrons. Thus para-nitro benzoic acid is more acidic than meta-nitro benzoic acid. In short, the higher acidity of p-nitrobenzoic acid compared to m-nitrobenzoic acid is attributed to its -I and -R effect.
Some foods are so high in acid that they are capable of making the acid in the stomach even stronger?
Some foods are so high in acid that they are capable of making the acid in the stomach even stronger.
Is cholesterol an example of a saturated fatty acid?
no, it is not even a fatty acid.
What is the difference between hydrochloric acid and perchloric acid?
Hydrochloric acid is HCl and it is a strong acid. Perchloric acdi is HClO4 and is an even stronger acid.
Is acetic acid a tribasic acid?
NO..even it's a week acid having structural formula CH3COOH.
Does calcium react in acid?
Yes. Calcium will react vigorously with acid and even water.
