Esterification and Soap Chemistry Quiz

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What is produced when ethanol reacts with ethanoic acid in the presence of an acid catalyst?

Ester and sodium hydroxide

Water and carbon dioxide

Vinegar and alcohol

Ester and water (correct)

What is the melting point of glacial acetic acid?

300 K

285 K

290 K (correct)

273 K

What role does concentrated sulfuric acid play in the esterification process?

It acts as a reactant

It neutralizes the acids

It serves as a catalyst (correct)

It dilutes the solution

Which of the following is a common use for a 5-8% solution of acetic acid?

Preservative in pickles Signup and view all the answers

What happens when an ester is treated with sodium hydroxide?

It forms alcohol and sodium salt Signup and view all the answers

What is the product formed when ethanoic acid reacts with sodium hydroxide?

Sodium ethanoate and water Signup and view all the answers

What gas is produced when ethanoic acid reacts with carbonates?

Carbon dioxide Signup and view all the answers

In the soap and water experiment, which test tube is expected to show oil and water separation first when soap is added?

Test tube B Signup and view all the answers

What is the main function of the hydrophilic heads in a micelle?

To attract water and stabilize the micelle Signup and view all the answers

Which of the following represents the correct reaction for ethanoic acid with sodium bicarbonate?

CH_3COOH + NaHCO_3 ightarrow CH_3COONa + H_2O + CO_2 Signup and view all the answers

What is the role of the hydrophilic end of a soap molecule?

It interacts with water Signup and view all the answers

What structure do soap molecules form when they clean oily dirt?

Micelles Signup and view all the answers

Why do soap molecules remain in solution as colloids?

They are prevented from precipitating due to ion-ion repulsion Signup and view all the answers

In a micelle, where do the hydrophobic tails of soap molecules reside?

In the center of the micelle Signup and view all the answers

What happens to the appearance of a soap solution when micelles form?

It appears cloudy Signup and view all the answers

What is one of the primary uses of ethanol in medicine?

As a solvent Signup and view all the answers

What gas is produced when ethanol reacts with sodium?

Hydrogen Signup and view all the answers

What is formed when ethanol is dehydrated using concentrated sulfuric acid?

Ethene Signup and view all the answers

Which of the following is true about methanol compared to ethanol?

Methanol can be fatal even in small amounts. Signup and view all the answers

What effect does large consumption of ethanol have on the central nervous system?

Depresses the central nervous system Signup and view all the answers

What mixture is denatured alcohol made from?

Ethanol and methanol Signup and view all the answers

At what temperature is ethanol dehydrated with concentrated sulfuric acid?

443 K Signup and view all the answers

What is the primary product when sodium reacts with ethanol?

Sodium ethoxide Signup and view all the answers

Which solution is likely to form more foam when soap is added?

Distilled water Signup and view all the answers

What type of compound is primarily used to overcome the issues caused by hard water in washing?

Detergent Signup and view all the answers

What is formed in hard water when soap is used?

A white curdy precipitate Signup and view all the answers

Which of the following is NOT a component of detergents mentioned?

Potassium salts Signup and view all the answers

What is necessary to achieve maximum cleaning efficiency with soap?

Agitation Signup and view all the answers

What effect do calcium and magnesium salts have on soap during washing?

Prevent foaming Signup and view all the answers

Which test tube would likely produce a curdy solid when soap is added?

One with hard water and soap Signup and view all the answers

What is a major difference between soap and detergents regarding cleaning in hard water?

Detergents form no precipitate with hard water ions Signup and view all the answers