Answer for Question 1: (A)

Suggested Reason: The 1st thing to look at is to decide the Solubility of Salts.
All SPA (Sodium, Potassium & Ammonium) salts are soluble in water. Next, Decide what type of reactants you could use. For ammonium sulfate, the common reagents you can used is Sulfuric Acid & Ammonium Hydroxide (more commonly known as Aqueous Ammonia or Ammonia Solution).

Answer for Question 2: (C)

Suggested Reason: Carbonic acid is a weak acid, hence it dissociate partially only. There should be Hydrogen ions (H+), Carbonate ions (CO32-) and some H2CO3 molecules in the mixture. By elimination, CO2 should not be present and thus the answer.

H2CO3 < => 2H+ + CO32-

Partial Dissociation of Carbonic Acid

Hope this information is clear to you.

To Your Academic Success in Chemistry,
Sean Chua =)
Master Trainer & Author
WINNERS Education Group

I am glad to see you reading this chemistry blogsite and participating in answering the questions.

Check out my suggested answers below.

Keep reading through the older “archives” in this blog to learn more.

To Your Academic Success in Chemistry,
Sean =)

You are spot on for Question 1, but answer for Question 2 is incorrect.

Check out my suggested answers below.

Cheers
Sean =)

Organic Chemistry is a broad subject title that can contain many mini topics such as:
1. Fuels
2. Intro to Organic Chemistry
3. Alkanes
4. Alkenes
5. Alcohols
6. Carboxylic Acids
7. Esters
8. Macromoelcules / Polymers

I would suggest that you search for the specific keywords at the SEARCH field on the
right hand side of this blog.

To Your Academic Success in Chemistry,
Sean =)