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.............. and ............ salt dis...

.............. and ............ salt dissolve in sodium hydroxide.

A

Zinc, Lead

B

Sodium, Lead

C

Lead, Copper

D

Sodium, Zinc

Text Solution

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The correct Answer is:
To solve the question, ".............. and ............ salt dissolve in sodium hydroxide," we need to identify two salts that can dissolve in sodium hydroxide (NaOH). ### Step-by-Step Solution: 1. **Understanding Sodium Hydroxide**: - Sodium hydroxide is a strong base. It can react with certain salts, especially those that contain amphoteric metals. 2. **Identifying Amphoteric Metals**: - Amphoteric substances can react with both acids and bases. Common amphoteric metals include zinc (Zn), aluminum (Al), and lead (Pb). These metals can form hydroxides when reacted with bases. 3. **Choosing Salts**: - We need to consider salts that contain amphoteric metals. - For example, zinc chloride (ZnCl2) and lead(II) chloride (PbCl2) are two salts that can dissolve in sodium hydroxide. 4. **Reactions with Sodium Hydroxide**: - When zinc chloride (ZnCl2) is dissolved in sodium hydroxide, it reacts to form zinc hydroxide (Zn(OH)2) and sodium chloride (NaCl): \[ ZnCl_2 + 2NaOH \rightarrow Zn(OH)_2 + 2NaCl \] - Similarly, lead(II) chloride (PbCl2) reacts with sodium hydroxide to form lead(II) hydroxide (Pb(OH)2) and sodium chloride: \[ PbCl_2 + 2NaOH \rightarrow Pb(OH)_2 + 2NaCl \] 5. **Conclusion**: - Therefore, the two salts that dissolve in sodium hydroxide are zinc chloride (ZnCl2) and lead(II) chloride (PbCl2). ### Final Answer: Zinc chloride and lead(II) chloride dissolve in sodium hydroxide. ---
To solve the question, ".............. and ............ salt dissolve in sodium hydroxide," we need to identify two salts that can dissolve in sodium hydroxide (NaOH). ### Step-by-Step Solution: 1. **Understanding Sodium Hydroxide**: - Sodium hydroxide is a strong base. It can react with certain salts, especially those that contain amphoteric metals. 2. **Identifying Amphoteric Metals**: ...
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