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Calcium salts with sodium hydroxide give...

Calcium salts with sodium hydroxide give......... precipitates.

A

pink

B

blue

C

white

D

green

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To solve the question "Calcium salts with sodium hydroxide give......... precipitates," we can follow these steps: ### Step 1: Identify the Reactants The reactants in this case are calcium salts and sodium hydroxide (NaOH). Calcium salts can be represented generally as CaX, where X is the anion (like nitrate, chloride, etc.). ### Step 2: Write the Reaction When calcium salts react with sodium hydroxide, they typically undergo a double displacement reaction. For example, if we take calcium nitrate (Ca(NO₃)₂) as the calcium salt, the reaction can be written as: \[ \text{Ca(NO}_3\text{)}_2 + 2 \text{NaOH} \rightarrow \text{Ca(OH)}_2 + 2 \text{NaNO}_3 \] ### Step 3: Identify the Product The main product formed in this reaction is calcium hydroxide (Ca(OH)₂). This compound is known to form a precipitate when produced in solution. ### Step 4: Determine the Characteristics of the Precipitate Calcium hydroxide (Ca(OH)₂) is known to be a white precipitate. This is an important characteristic that answers the question. ### Step 5: Conclusion Thus, when calcium salts react with sodium hydroxide, they produce a white precipitate of calcium hydroxide. ### Final Answer Calcium salts with sodium hydroxide give **white precipitates**. ---
To solve the question "Calcium salts with sodium hydroxide give......... precipitates," we can follow these steps: ### Step 1: Identify the Reactants The reactants in this case are calcium salts and sodium hydroxide (NaOH). Calcium salts can be represented generally as CaX, where X is the anion (like nitrate, chloride, etc.). ### Step 2: Write the Reaction When calcium salts react with sodium hydroxide, they typically undergo a double displacement reaction. For example, if we take calcium nitrate (Ca(NO₃)₂) as the calcium salt, the reaction can be written as: ...
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