yes
If this is supposed to be an alkene test, then no, hexane will not react with bromine water to take away its color as it is an alkane and therefore contains no double bonds. But bromine water will react with sodium hydroxide; bromine water contains either HCl or H2SO4, both of which will of course react with sodium hydroxide. In addition, I believe (from some experiments like this that I've done recently) that sodium hydroxide will actually react with the free bromine in the bromine water, as evidenced by the change in color from the orange-ish color of bromine water to a pale yellow.
When bromine water is shaken with a saturated fat, the bromine water will turn colorless. This is because saturated fats do not contain double bonds to react with the bromine in a typical alkene addition reaction, which would normally turn the bromine water brown/orange.
In the bromine test, an alkene compound will decolorize a bromine solution whereas an aromatic compound will not react with the bromine solution. This is because the double bond in the alkene readily reacts with bromine to form a colorless product, while the stable aromatic ring in the aromatic compound does not undergo such reaction.
Bromine does not react with aqueous potassium chloride because it is less reactive than chlorine. Chlorine is more electronegative than bromine and hence has a higher tendency to displace bromine from its compounds. Consequently, bromine remains unreactive in the presence of aqueous potassium chloride.
Two bromine atoms will form a nonpolar covalent bond when they react with each other.
Yes, silver does react with bromine. Silver becomes oxidized in the presents of bromine gas, that's why silver jewelry tarnishes.
Ethanol does not react with bromine.
Yes, cinnamaldehyde can react with Fehling's reagent to form an orange-red precipitate of copper(I) oxide. This is because aldehydes are capable of reducing the copper(II) ions present in the Fehling's reagent to form the insoluble copper(I) oxide.
Bromine does not react with air because it is not possible. It is a non reactant element.
Yes, bromine will react with sodium. When bromine comes in contact with sodium, they will react to form sodium bromide, a white solid compound. This reaction is a redox reaction where bromine gets reduced and sodium gets oxidized.
no
Two magnesium atoms would be needed to react with one bromine molecule. Magnesium has a +2 oxidation state, while bromine has a -1 oxidation state. This means that two magnesium atoms are needed to balance the charges when reacting with one bromine molecule.
If this is supposed to be an alkene test, then no, hexane will not react with bromine water to take away its color as it is an alkane and therefore contains no double bonds. But bromine water will react with sodium hydroxide; bromine water contains either HCl or H2SO4, both of which will of course react with sodium hydroxide. In addition, I believe (from some experiments like this that I've done recently) that sodium hydroxide will actually react with the free bromine in the bromine water, as evidenced by the change in color from the orange-ish color of bromine water to a pale yellow.
Yes
Yes, bromine reacts with air to form bromine vapors. Bromine reacts with oxygen present in the air to form bromine oxides.
No, there is no double bond for it to react with
Yes, ethyne (acetylene) can react with bromine to form 1,2-dibromoethane. This is an addition reaction where the bromine atoms add across the carbon-carbon triple bond in ethyne.