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Did the evidence obtained in the silver nitrate tests of the three solutions prove conclusively that the reside actually was potassium chloride?
The silver nitrate tests can indicate the presence of chloride ions, as they form a white precipitate (silver chloride) when combined with chloride. However, while the formation of this precipitate suggests the presence of chloride, it does not conclusively identify the compound as potassium chloride, since other chlorides could also yield similar results. Additional tests would be necessary to confirm the specific identity of the compound as potassium chloride. Therefore, while suggestive, the evidence from the silver nitrate tests alone is not conclusive.
White precipitate formed in the carbon and hydrogen?
The formation of a white precipitate in the presence of carbon and hydrogen could indicate the formation of metal carbides or metal hydrides. These compounds can be produced when metals react with carbon or hydrogen in certain conditions, resulting in the insoluble white precipitate. Further testing and analysis would be needed to confirm the exact identity of the precipitate.
Predict the identity of the precipitate that forms when aqueous solutions what substance are mixed Indicate which rules apply lead II nitrate PbNO32 and hydrochloric acid HCl?
When lead (II) nitrate (Pb(NO3)2) and hydrochloric acid (HCl) are mixed, a precipitate of lead chloride (PbCl2) forms according to the solubility rules. Lead chloride is insoluble in water and thus precipitates out of the solution.
Did the evidence obtained in the silver nitrate tests of the 3 solutions prove conclusively that the residue actually was potassium chloride?
The evidence obtained from the silver nitrate tests strongly suggests that the residue is likely potassium chloride. The formation of a white precipitate in the silver nitrate tests is characteristic of chloride ions reacting with silver ions. However, further confirmatory tests may be needed to conclusively prove the identity of the residue as potassium chloride.
what is the mass and the identity of the precipitate that forms when 55.0 ml of 0.100 M BaCl2 reacts with 40.0 ml of 0.150 M Na2CO3?
BaCl2 + Na2CO3 --> BaCO3 + 2NaCl Barium carbonate is the precipitate. 55ml x 0.1 M = 5.5 mmol Ba 40ml x 0.15 M = 6.0 mmol CO3 Thus limiting reagent is Ba. Molar mass barium carbonate = 137 + 12 + 3 x 16 = 197 g/mole = 197 mg/mmol 5.5 mmol x 197 mg/mmol = 1083.5 mg Round for sig figs .... 1080 mg barium carbonate
What is the identity for salt?
If you think to formula of salt this formula unit is NaCl (sodium chloride).
What does the glowing split test suggest about the identity of the gas evolved in manganese oxide?
The glowing split test suggests that the gas evolved in manganese oxide is likely oxygen. This is because manganese oxide can decompose to release oxygen gas, which would support the glowing splint test result.
How many protons electrons and electrons in manganese?
The element manganese has 25 protons in its nucleus. You'll recall that the number of protons in an atom gives it its chemical identity, and only that. It will also have 25 electrons when the atom is in the neutral state. (Manganese normally "loans out" electrons in chemical reactions.) There are 30 neutrons in the only stable isotope of manganese, but there are a number of different isotopes of this transition metal. They've been synthesized, of course, and the number of neutrons ranges from 19 through 44. A link can be found below.
Is dissolving sodium chloride in water a physical or chemical charge?
Dissolving sodium chloride (table salt) in water is a physical change. When sodium chloride dissolves, it dissociates into its constituent ions (sodium and chloride) but retains its chemical identity. The process is reversible; the salt can be recovered by evaporating the water, demonstrating that no new substances are formed.
What is color and formula of the precipitate?
A precipitate is a solid that is formed when mixing two solutions. The dissolved ions or molecules from the two solutions mix and form a new compound which is no longer soluble, and so a solid forms. The identity and composition of the solid depends completely on what two solutions have been mixed together. Without knowing what is being mixed, you cannot know what the composition of the precipitate is.
Why is it there's a formation of red brown precipitate in acetone and AgNO3?
The formation of a red-brown precipitate when mixing acetone and silver nitrate (AgNO3) is due to the formation of silver acetylide or other silver complexes, depending on the specific conditions and concentrations. Acetone can act as a ligand, facilitating the precipitation of silver ions as insoluble compounds. The color and identity of the precipitate may vary based on the presence of other substances or the specific reaction conditions.
What is the differences between chemical and physical changes?
chemical- changes identity of substance. some signs: bubbles, precipitate forms, color change, difference in temperature physical- does not change identity of substance. can be homogeneous or heterogeneous. meaning appearing to be the same throughout and appearing to have different parts throughout; respectively.
