Classify each of the following as a strong acid, weak acid, strong base or weak base.

• A.
• B.
• C.
• D.

Answer: (B)

Verified step by step guidance

1. Identify the chemical formula of the compound. For example, NaN₃ is sodium azide and SrH₂ is strontium hydride.
2. Determine the nature of the compound. Sodium azide (NaN₃) is typically not considered a base in aqueous solutions, while strontium hydride (SrH₂) can release hydroxide ions in water, making it a base.
3. Classify the compound based on its ability to dissociate in water. Strong bases dissociate completely in water, while weak bases do not.
4. Consider the position of the metal in the periodic table. Strontium is an alkaline earth metal, which often forms strong bases.
5. Based on the dissociation and periodic table position, classify NaN₃ as a weak base and SrH₂ as a strong base.