Which common compound found in glass cleaner is primarily responsible for dissolving dirt and grease on a window?

• A. Sodium chloride (NaCl)
• B. Ammonia (NH_3)
• C. Sulfuric acid (H_2SO_4)
• D. Calcium carbonate (CaCO_3)

Answer: (B)

Verified step by step guidance

1. Identify the role of each compound listed in the problem in terms of their chemical properties and common uses.
2. Understand that sodium chloride (NaCl) is common table salt and is generally not used for dissolving grease or dirt; it mainly affects ionic strength in solutions.
3. Recognize that sulfuric acid (H_2SO_4) is a strong acid used for heavy-duty cleaning and industrial purposes but is too harsh and not typical in household glass cleaners.
4. Know that calcium carbonate (CaCO_3) is a mild abrasive and is found in materials like chalk and limestone, not typically used for dissolving grease or dirt on glass.
5. Recall that ammonia (NH_3) is a weak base that can break down organic compounds like grease and dirt by reacting with them, making it the primary active ingredient in many glass cleaners.