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What is ethanolic sodium hydroxide?
This is Sodium Hydroxide (NaOH) dissolved in ethanol (CH3CH2OH), this must be done in advance because it takes a bit of time for the NaOH to dissolve in the ethanol as long as you have the equivalents correct.
How much sodium hydroxide in grams must be added to seawater to completely precipitate 86.9mg of magnesium?
To completely precipitate 86.9mg of magnesium from seawater, you would need to add an equal molar amount of sodium hydroxide. The molar mass of magnesium is about 24.3 g/mol, so 86.9mg is equivalent to about 3.57 mmol of magnesium. You would need the same amount of mmol of sodium hydroxide to completely precipitate the magnesium.
How many grams of sodium hydroxide must be dissolve in 200 g of water to produce a 4.00 percent by mass aqueous sodium hydroxide solution?
4.00% (percent) by mass (weight) means 4.00g for each 100g of solution. There are 2 x 100g of water, so 2 x 4g =8.00g of NaOH (sodium hydroxide) But, a 4% aqueous solution of NaOH should mean it's 96% (96g) water. There are 2.08333 x 96g of water, so 2.08333 x 4g = 8.33g of NaOH.
Why must sodium be stored under paraffin?
Sodium is a highly reactive metal that reacts vigorously with air and moisture to form sodium hydroxide and hydrogen gas. Storing sodium under paraffin oil helps prevent its exposure to moisture and oxygen, which can prevent its reactivity and potential hazards.
What is the equation for sodium hydroxide and aluminum sulfate?
The balanced chemical equation for the reaction between sodium hydroxide (NaOH) and aluminum sulfate (Al2(SO4)3) is: 6 NaOH + Al2(SO4)3 -> 3 Na2SO4 + 2 Al(OH)3 This reaction forms sodium sulfate and aluminum hydroxide.
What is the pH of sodium hidroxide?
Sodium hydroxide is alkaline and so its pH must be above 7. It is not a strong base so its pH may be 9 approximately.
Which is stronger solution vinegar or sodium hydroxide?
Sodium hydroxide (NaOH) is stronger than vinegar (acetic acid) in terms of pH and its ability to donate hydroxide ions. Sodium hydroxide is a strong base, while vinegar is a weak acid. In terms of corrosiveness and reactivity, sodium hydroxide is much more dangerous and must be handled with care.
Can sodium hydroxide produce pH of 4?
No, sodium hydroxide is a strong base so its pH must be higher than 7.
What is ethanolic sodium hydroxide?
This is Sodium Hydroxide (NaOH) dissolved in ethanol (CH3CH2OH), this must be done in advance because it takes a bit of time for the NaOH to dissolve in the ethanol as long as you have the equivalents correct.
How much sodium hydroxide in grams must be added to seawater to completely precipitate 86.9mg of magnesium?
To completely precipitate 86.9mg of magnesium from seawater, you would need to add an equal molar amount of sodium hydroxide. The molar mass of magnesium is about 24.3 g/mol, so 86.9mg is equivalent to about 3.57 mmol of magnesium. You would need the same amount of mmol of sodium hydroxide to completely precipitate the magnesium.
What will Sodium must be kept under?
Sodium must be kept under mineral oil to prevent it from reacting with moisture in the air and forming sodium hydroxide. Additionally, it should be stored in a cool, dry place away from sources of heat or ignition.
Why do the solid sodium hydroxide and aluminium powder not react when stored in a sealed container?
Solid sodium hydroxide and aluminum powder do not react when stored in a sealed container because they require moisture to initiate a chemical reaction. In the absence of moisture, the two substances remain stable and do not interact with each other.
What volume in mLs of 0.100 M sodium hydroxide solution must be added to 20.0 mL of 0.08 M sulfuric acid solution to reach the end point?
To neutralize the sulfuric acid completely, you need a 1:2 molar ratio of sodium hydroxide to sulfuric acid. Therefore, you would need to add twice the amount of sodium hydroxide compared to the amount of sulfuric acid, which is 40.0 mL of the sodium hydroxide solution.
How many grams of sodium hydroxide must be dissolve in 200 g of water to produce a 4.00 percent by mass aqueous sodium hydroxide solution?
4.00% (percent) by mass (weight) means 4.00g for each 100g of solution. There are 2 x 100g of water, so 2 x 4g =8.00g of NaOH (sodium hydroxide) But, a 4% aqueous solution of NaOH should mean it's 96% (96g) water. There are 2.08333 x 96g of water, so 2.08333 x 4g = 8.33g of NaOH.
Can sodium hydroxide be stored in a Erlenmeyer flask?
It is not recommended to store sodium hydroxide in an Erlenmeyer flask because the strong base can react with the glass, causing potential damage or breakage of the flask. It is better to store sodium hydroxide in a container made of a material that is compatible with strong bases, such as high-density polyethylene or glass specifically designed for chemical storage.
Why must sodium be stored under paraffin?
Sodium is a highly reactive metal that reacts vigorously with air and moisture to form sodium hydroxide and hydrogen gas. Storing sodium under paraffin oil helps prevent its exposure to moisture and oxygen, which can prevent its reactivity and potential hazards.
How do you distinguish sodium hydroxide and sodium acetate?
To test presence of Sodium ions, do a flame test: color observed: golden yellow. To test presence of carbonate or hydrogen carbonate ions: Take some of the sodium hydrogen carbonate in a dry test tube. Heat the test tube and bubble the gas through limewater. Limewater turns milky. Carbonate or hydrogen carbonate ions present. To distinguish between carbonate and hydrogen carbonate: Add indicator solution. If colour of solution turns green, pH is 7-8, hydrogen carbonate ions are present. If colour of solution turns blue, pH is 12-13, carbonate ions are present. -Iberuz
