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Can HNO3 and add NaNO3 ( 0.5 molar namo3) at PH3 dissolve Al2o3 in room temperature?
Accepted Answer
HNO3 (nitric acid) can dissolve Al2O3 (aluminum oxide) due to the formation of soluble aluminum nitrate [Al(NO3)3]. However, the presence of NaNO3 (sodium nitrate) and a pH of 3 will influence the reaction. Here's a breakdown:
1. HNO3 and Al2O3: Nitric acid is a strong acid, and its reaction with aluminum oxide is an acid-base reaction. The acid (HNO3) will react with the base (Al2O3) to form aluminum nitrate and water.
2. pH 3: At a pH of 3, the solution is acidic, which favors the dissolution of Al2O3. However, the exact rate of dissolution will depend on the concentration of HNO3.
3. NaNO3: Sodium nitrate is a soluble salt and won't directly participate in the dissolution of Al2O3. However, its presence could affect the ionic strength of the solution, potentially influencing the dissolution rate.
Important Considerations:
Concentration of HNO3: The rate of dissolution will be significantly impacted by the concentration of nitric acid. Higher concentrations will lead to faster dissolution.
Temperature: Elevated temperatures typically increase the rate of chemical reactions.
Surface Area of Al2O3: A larger surface area of Al2O3 will expose more of the material to the acid, leading to faster dissolution.
To get a more precise answer about the feasibility of dissolving Al2O3 in this specific mixture, more information is needed, such as the exact concentration of HNO3.
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