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What must be done to obtain the solid salt resulting from an acid - base reaction in an aqueous solution?
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Sodium acetate from glacial acetic acid?
The reaction is: CH3COOH + NaHCO3 = CH3COONa + H2O + CO2 Slowly heating the aqueous solution you can obtain crystallized sodium acetate.
How many milliliters of an aqueous solution of 0.149 M ammonium acetate is needed to obtain 16.9 grams of the salt?
The answer is 1 471,5 mL.
How many milliliters of an aqueous solution of 0.123 M cobalt(II) sulfate is needed to obtain 3.14 grams of the salt?
164,7 mL are needed.
If you were asked to add 50 mL of a stock solution to a reaction vessel which piece of glassware would you use to obtain this volume of solution?
You can use a graduated cylinder or a pipette of 50 mL.
What happens when an aqueous solution of sodium sulphate reacts with an aqua solution of barium chloride?
The immediate response is a milky appearance. After 5-10 minutes a precipitate of BaSO4 will settle out of solution. You will obtain a cloudy, white precipitate that will remain so infantily. This is a precipitation reaction (the formation of an insoluble salt from a solution of soluble ones) which occurs because barium sulfate is insoluble, so when mixed, the barium ions react with the sulfate ions to form a white precipitate of barium sulfate The net ionic equation is: Ba2+(aq) + SO42-(aq) ----> BaSO4(s)
How can we obtain potassium nitrate which is free of soil?
A simple method is to filter the aqueous solution; after this the solution is heated to obtain crystallized KNO3.
Sodium acetate from glacial acetic acid?
The reaction is: CH3COOH + NaHCO3 = CH3COONa + H2O + CO2 Slowly heating the aqueous solution you can obtain crystallized sodium acetate.
Why do you use molten NaCl in electrolysis instead of an aqueous solution of NaCl?
Molten salt electrolysis is used to obtain sodium and chlorine. Electrolysis of the water solution is used to obtain sodium hydroxide and hydrogen.
How many ml of a 0.124 m aqueous solution of nickel fluoride must be taken to obtain 4.36 grams of the salt?
The answer is 364 mL.
How many milliliters of an aqueous solution of 0.149 M ammonium acetate is needed to obtain 16.9 grams of the salt?
The answer is 1 471,5 mL.
How many milliliters of an aqueous solution of 0.123 M cobalt(II) sulfate is needed to obtain 3.14 grams of the salt?
164,7 mL are needed.
Is running water through a filter considered a chemical change?
No, This is a process to obtain a solid from an aqueous solution. No chemical process is taking place during filtration.
If you were asked to add 50 mL of a stock solution to a reaction vessel which piece of glassware would you use to obtain this volume of solution?
You can use a graduated cylinder or a pipette of 50 mL.
Why sodium chloride is not in the aqueous state?
The reduction potential of sodium is under the same potential of water.
What happens when an aqueous solution of sodium sulphate reacts with an aqua solution of barium chloride?
The immediate response is a milky appearance. After 5-10 minutes a precipitate of BaSO4 will settle out of solution. You will obtain a cloudy, white precipitate that will remain so infantily. This is a precipitation reaction (the formation of an insoluble salt from a solution of soluble ones) which occurs because barium sulfate is insoluble, so when mixed, the barium ions react with the sulfate ions to form a white precipitate of barium sulfate The net ionic equation is: Ba2+(aq) + SO42-(aq) ----> BaSO4(s)
How should you prepare a 4M solution of MgSO4?
BY adding excess Filter off excess MgCO3(s) . heat the filter to get a saturated solution , cool to obtain crystals , filter . H2SO4(aq)+MgCO3(s)--->MgSO4(aq)+H2CO3(g)
When two aqueous solutions are introduced in the same container is stirring necessary to achieve a homogeneous system?
Yes, the two aqueous solutions must be mixed thoroughly in order to obtain homogeneity.
