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What is the colour change before and after Aqueous ammonia is added to a test tube containing a precipitate of copper II hydroxide and the precipitate dissolves?
The precipitate of copper II hydroxide is initially blue-green. When aqueous ammonia is added, the precipitate dissolves to form a deep blue solution due to the formation of a complex ion called tetraamminecopper (II) complex.
How are hydroxide ions represented?
Hydroxide ions are represented by the chemical formula OH-. In aqueous solutions, they can also be denoted as [OH]-.
What happens in the reaction between sodium hydroxide and magnesium sulphate?
When sodium hydroxide reacts with magnesium sulfate, a double displacement reaction occurs where the sodium ions from sodium hydroxide switch places with the magnesium ions from magnesium sulfate to form sodium sulfate and magnesium hydroxide. The products of this reaction are aqueous sodium sulfate and a white precipitate of magnesium hydroxide.
What happens when aqueous ammonia is added to lime water?
When aqueous ammonia is added to lime water, a white precipitate of calcium hydroxide is formed as the ammonia reacts with the calcium hydroxide present in the lime water. This reaction can be represented as: Ca(OH)2 + 2NH3 → Ca(NH2)2 + 2H2O.
What does iron sulphate solution and sodium hydroxide solution react to make and are the products aqueous?
Fe SO3 (aq) + 2 NaOH (aq) == Fe(OH)2 (s) +Na2So3
What happens when two aqueous solutions are combined in a precipitation reaction and no precipitate is formed?
When two aqueous solutions are combined in a precipitation reaction and no precipitate is formed, it means that the ions in the solutions do not react to form an insoluble compound. Instead, they remain in solution as dissolved ions. This occurs when the ions present do not have a strong tendency to form insoluble compounds.
When aqueous solutions of iron(III) sulfate (Fe2(SO4)3) and sodium hydroxide were mixed a precipitate formed. What is the precipitate?
When aqueous solutions of iron(III) sulfate (Fe2(SO4)3) and sodium hydroxide (NaOH) are mixed, a precipitate of iron(III) hydroxide (Fe(OH)3) forms. This occurs due to the reaction between the iron(III) ions and hydroxide ions, leading to the formation of the insoluble hydroxide. The balanced chemical equation for the reaction is: Fe2(SO4)3 + 6 NaOH → 2 Fe(OH)3 (s) + 3 Na2SO4.
What do you get when aqueous solutions of sodium carbonate and zinc chloride are combined?
When aqueous solutions of sodium carbonate and zinc chloride are combined, a double displacement reaction occurs. This results in the formation of zinc carbonate, which is a white solid precipitate that settles out of the solution, and sodium chloride, which remains dissolved in the solution.
What will be the observation when you will add aqueous sodium hydroxide is added to aqueous iron 3 sulphate?
A brown precipitate of iron(III) hydroxide will form, along with the sodium sulfate remaining in solution. The iron(III) hydroxide precipitate will settle at the bottom of the container.
What is it called when chunks apper during a chemical reaction?
If the chunks appear after two aqueous solutions are combined, it is called precipitation. The chunks would then be called the precipitate.
What is the observation of few drops of aqueous sodium hydroxide added to aqueous beryllium chloride?
When aqueous sodium hydroxide is added to aqueous beryllium chloride, a white precipitate of beryllium hydroxide (Be(OH)2) is formed. Beryllium hydroxide is insoluble in water, hence it appears as a white solid.
What is a pecipitate?
A precipitate is a solid that forms from a solution during a chemical reaction. It is typically formed when two soluble reactants combine to form an insoluble product, which then separates out as a solid. The solid precipitate can be filtered out from the remaining solution.
What if any precipitate is formed when aqueous solutions of Na2CO3 and MgSO4 react?
When aqueous solutions of Na2CO3 and MgSO4 react, a precipitate of magnesium carbonate (MgCO3) is formed. This is because magnesium carbonate is insoluble in water and therefore precipitates out of the solution.
What is the colour change before and after Aqueous ammonia is added to a test tube containing a precipitate of copper II hydroxide and the precipitate dissolves?
The precipitate of copper II hydroxide is initially blue-green. When aqueous ammonia is added, the precipitate dissolves to form a deep blue solution due to the formation of a complex ion called tetraamminecopper (II) complex.
What statement about Arrhenius acids is FALSETheir aqueous solutions are electrolytesTheir water solutions are called aqueous acids They increase the concentration of hydroxide ions in aqueous solutionThey are molecular compounds with hydrogen ions?
The answer is: They increase the concentration of hydroxide ions in aqueous solution.
An aqueous solution that contains extra hydroxide ions is?
Basic solutions are solutions that have more than a 1E-7 concentration of hydroxide ion. Thus, solutions with "extra" hydroxide ions are basic. On the other hand, solutions with extra hydrogen (hydronium) ions are acidic.
What is a substance that produces hydroxide ions in aqueous solutions?
A substance that produces hydroxide ions in aqueous solutions is called a base. When dissolved in water, bases release hydroxide ions (OH-) which can accept hydrogen ions (H+) to form water. Examples of bases include sodium hydroxide (NaOH) and potassium hydroxide (KOH).
