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What is the color of precipitate when CuO plus HCl?
The color of the precipitate formed when copper oxide (CuO) reacts with hydrochloric acid (HCl) is typically black or brown. This reaction produces copper chloride (CuCl2) along with water (H2O).
What solutions make a purple precipitate?
A purple precipitate can be formed by mixing potassium permanganate solution with iron(II) sulfate solution. This reaction produces a solid manganese dioxide precipitate.
What happens when sodium hydroxide is added to copper oxide the colour of precipitate?
When sodium hydroxide is added to copper oxide, a blue precipitate of copper hydroxide is formed. The color of the precipitate is due to the formation of copper ions in solution.
Which element produces the most intense color?
It depends on the context, but in general, elements such as chromium, cobalt, and copper are known for producing intense colors in compounds. For example, chromium produces a bright green color, cobalt produces a deep blue color, and copper produces a vibrant blue or green color.
Why are there blue precipitate at the end of redox titration?
The blue precipitate may indicate the presence of excess indicator in the solution. In redox titrations, the indicator changes color when the reaction reaches its endpoint. If too much indicator is added, it can form a colored precipitate due to its reaction with the titrant, which can obscure the endpoint of the titration. It is important to carefully control the amount of indicator to avoid this issue.
What element produces a blue ash?
Copper is the element that produces a blue ash when burned. When copper compounds, such as copper sulfate or copper chloride, are heated, they can produce a characteristic blue color in the ash due to the formation of copper oxides. This blue ash is often seen in certain types of pyrotechnics and when burning specific copper-containing materials.
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 type of reaction produces a precipitate?
Double Replacement #NoWorries
What is the color of precipitate when CuO plus HCl?
The color of the precipitate formed when copper oxide (CuO) reacts with hydrochloric acid (HCl) is typically black or brown. This reaction produces copper chloride (CuCl2) along with water (H2O).
Why do we multiply the mass of precipitate with a gravimetric factor?
The gravimetric factor is related to the percentage of element (or ion) to be determined in the precipitate (as compound).
What happens when ammonia solution is added to copper sulphate?
A precipitate is formed which has a light blue colour. After shaking, the precipitate re-dissolves forming a dark blue solution.
What solutions make a purple precipitate?
A purple precipitate can be formed by mixing potassium permanganate solution with iron(II) sulfate solution. This reaction produces a solid manganese dioxide precipitate.
If a reaction produces an insoluble salt what will you notice happening in the test tube?
If a reaction produces an insoluble salt, you will observe the formation of a cloudy or precipitate solution in the test tube. This indicates that a chemical reaction has occurred and a solid salt has been formed that is not soluble in the reaction mixture.
What is the color or the precipitate Cu3PO42?
precipitate can be of any color and depends upon the complex formed in precipitation.
What element has sky blue spectral lines?
Cesium Indium, as in indigo. (Cesium does burn with a blue colour too but it wasn't named for that trait.)
How do you get prussian blue precipitate?
Put together a ferric ions containing solution and dissolved potassium ferrocyanide Fe3+ + K+ + [FeII(CN)6]4- --> KFeIII[FeII(CN)6] , colloidal precipitate of potassium ferric ferrocyanide which is 'Prussian blue'.
Which element produces a red flame when it reacts with water?
Lithium is the element that produces a red flame when it reacts with water.
