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An aqueous solution of sodium hydroxide contained in a bottle is labelled 2M. Determine the mass of sodium hydroxide used in preparing?
To determine the mass of sodium hydroxide used in preparing a 2M solution, you need to know the volume of the solution you are preparing. The concentration of 2M means there are 2 moles of sodium hydroxide in 1 liter of solution. You can use the formula: mass = molarity x volume x molar mass to calculate the mass of sodium hydroxide. For example, if you are preparing 1 liter of the solution, the mass would be 2 x 1 x 40 g/mol (molar mass of NaOH) = 80 grams.
What is the concentrate of 2M NaCl?
2M NaCl is a equivalent to a solution with 116,88 g NaCl in 1 L water.
How much hydrochloric acid would a 2M solution contain?
A 2M solution of hydrochloric acid would contain 2 moles of hydrochloric acid per liter of solution. To determine the amount of hydrochloric acid in a certain volume of 2M solution, you can use the formula: moles = Molarity x Volume (in liters).
A chemist has m gm of salt water that is m percent salty so how many gram of salt must be added to make a solution that is 2m percent salty?
To convert the solution from m percent salty to 2m percent salty, you need to add m/2 grams of salt. This will ensure that the ratio of salt to water in the solution is doubled, resulting in a 2m percent salty solution.
How would you prepare 30mL of a 5M NaCl solution from a 2M NaCl stock solution?
You have to evaporate (by open boiling) 45 mL of the 75 mL 2M NaCl solution thus reducing the volume to 30 mL 5M NaCl.
How do you prepare 2M 100 ml sodium hydroxide solution?
To prepare a 2M solution of sodium hydroxide in 100 ml, you would need to dissolve 8 grams of sodium hydroxide (NaOH) pellets in approximately 80 ml of distilled water, and then add more distilled water to reach a total volume of 100 ml. Be cautious as the dissolution of NaOH in water is exothermic and can cause the solution to become hot, so allow it to cool before handling. Additionally, wear appropriate protective gear such as gloves and goggles when working with NaOH due to its corrosive nature.
How many grams do you need to add to prepare a 2M solution if you have 2L solution?
4 gram molecular weights (moles): However many grams four moles* of the solute is. * Hint: four moles of sodium chloride weighs less than four moles of sucrose.
What is the pH of 2M hcl?
The pH of a 2M HCl solution is around 0. This is because HCl is a strong acid that dissociates completely in water to produce H+ ions, leading to a highly acidic solution.
What substances have the highest pH?
Concentrated bases (more than 2M/L) as sodium hydroxide for example.
What is the pH level of 2M potassium hydroxide solution?
The pH level of a 2M potassium hydroxide solution is around 13-14, indicating that it is highly alkaline. This is because potassium hydroxide is a strong base that dissociates completely in water to produce hydroxide ions, which raise the pH of the solution.
How do you solve 2m 7 9?
To solve the expression "2m 7 9," we first need to clarify the operations involved. If the expression is meant to be interpreted as "2m + 7 + 9," we can combine the constants to get "2m + 16." If it represents a different operation, please specify the operations to provide an accurate solution.
What substance have the highest pH (14)?
Concentrated bases (more than 2M/L) as sodium hydroxide for example.
