1. Would you expect ibuprofen to be soluble or insoluble in 1.0 M NaOH?

Explain.

2. Thymol is very slightly soluble in water and very soluble in 1.0 M NaOH. Explain.

Any info. would help!

Below are two web pages. The first shows ibuprofen has a -COOH group which makes it an acid and that should be soluble in NaOH. The second shows a phenol group on the benzene ring and that should be acidic also. That also will dissolve in NaOH.

http://en.wikipedia.org/wiki/Ibuprofen
http://en.wikipedia.org/wiki/Thymol

Ibuprofen is a carboxylic acid. It will react with the NaOH to for the sodium salt of the carboxylic acid. The salt is typically soluble in water.

X-COOH + NaOH = X-COO-Na+ + H2O

So it will dissolve in a strongly alkaline solution and precipitate out when you add acid

yes

1. Ah, the age-old question of whether ibuprofen likes to party with sodium hydroxide. Well, my friend, let me shed some light on this mystery. Ibuprofen does indeed have a -COOH group, making it an acid. And we all know that acids love to mingle with bases like NaOH. So, in 1.0 M NaOH, ibuprofen would happily dissolve, just like joining a dance floor full of enthusiastic partygoers.

2. Ah, thymol, the social butterfly of solubility. Despite being a bit of a wallflower when it comes to water, thymol sure knows how to charm its way into the 1.0 M NaOH crowd. Why, you ask? Well, thymol boasts a phenol group on its benzene ring, which just so happens to be acidic. And as we all know, acids and bases like NaOH are like long-lost pals. So, thymol would eagerly dissolve in 1.0 M NaOH, ready to make new friends and enjoy the chemical shenanigans that unfold.

1. Ibuprofen is expected to be soluble in 1.0 M NaOH. This is because ibuprofen contains a carboxylic acid group (-COOH), which makes it an acidic compound. NaOH is a strong base and can react with the acidic group to form a salt through acid-base neutralization. The resulting salt will be soluble in water, including in 1.0 M NaOH solution.

2. Thymol is very slightly soluble in water but very soluble in 1.0 M NaOH. This can be explained by the presence of a phenol group (-OH) on the benzene ring in the thymol molecule. The phenol group is also acidic, and it can react with the strong base NaOH through acid-base neutralization to form a soluble salt. Therefore, thymol dissolves readily in 1.0 M NaOH due to the formation of a soluble salt.

1. To determine whether ibuprofen would be soluble or insoluble in 1.0 M NaOH, we can analyze its chemical structure and properties. Ibuprofen contains a carboxylic acid functional group (-COOH), which is a weak acid. When dissolved in water, the -COOH group can release H+ ions, making it capable of reacting with strong bases like NaOH.

NaOH is a strong base that dissociates completely into Na+ and OH- ions in water. The OH- ions from NaOH can react with the H+ ions released by the -COOH group in ibuprofen, forming water and a soluble sodium salt of ibuprofen.

Therefore, we would expect ibuprofen to be soluble in 1.0 M NaOH due to the acidic nature of its carboxylic acid functional group.

2. Thymol is slightly soluble in water but highly soluble in 1.0 M NaOH. This solubility behavior can be explained based on the chemical structure and properties of thymol.

Thymol contains a phenol functional group (-OH) attached to a benzene ring. The hydroxyl group (-OH) in phenol is mildly acidic. In water, phenol can donate a proton (H+) from the hydroxyl group to water molecules, resulting in the formation of phenolate ions (C6H5O-).

When dissolved in 1.0 M NaOH, the phenol group of thymol can react with the strong base OH- ions from NaOH. This reaction leads to the formation of water and a soluble sodium salt of thymol.

Due to the acidic nature of the phenol group, thymol exhibits increased solubility in 1.0 M NaOH compared to its solubility in water alone.

Note: When referring to chemical structures and acid-base properties, it is always recommended to consult reliable sources like scientific literature, textbooks, or reputable websites. The provided Wikipedia links can be helpful references to find further information about ibuprofen and thymol.