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What colour change occurs when propene is added in bromine water?
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What happens when bromine water is shaken with a saturated fat?
i don't think that any change occurs, it remains the same
What result occurs adding ethyl cyclohexene to Bromine?
Cyclohexene picks up the bromine from solution and becomes dibromoethylcyclohexane.
What colour change occurs when h2o2 is added to kmno4?
MnO4- turns into Mn+2.So purple change into pale pink.
What are four types of evidence that indicate that a chemical reaction may have taken place?
1. A colour change occurs 2. A gas is evolved. 3. A precipitate is formed. 4. A large energy change occurs.
What is meant by the term thermochromic?
this is the dramatic, reversible colour change that occurs when a material is melted or dissolved in a solvent, it is a phase change not a temperature effect despite its name.
What colour dous it change to during the reaction?
what colour change occurs during the calcium and hydrochloric acid reaction
What happens when bromine water is added to ethanol?
It will turn colorless because bromine is an unsaturated compound and unsaturated compound have double bonds
Is bromine synthetic?
No, Bromine is not a synthetic element, it occurs naturally
What happens when bromine water is shaken with a saturated fat?
i don't think that any change occurs, it remains the same
Why the brown color of bromine disappear when mixed with cyclohexene?
Halogens react with alkenes to form haloalkanes. Addition of the bromine in this case occurs across the double bond in cyclohexene. The resultant products are colourless hence the brown colour disappears.
What is the colour of bromine vapour?
Elemental bromine is a fuming red-brown liquid at room temperature, corrosive and toxicBromine is a chemical element with the symbol Br, and atomic number of 35. It is in the halogen group.Free bromine does not occur in nature, but occurs as colorless soluble crystalline mineral halide salts, analogous to table salt.
What is formed when a chemical change occurs?
the colour,appearanceand composition changes.
What result occurs adding ethyl cyclohexene to Bromine?
Cyclohexene picks up the bromine from solution and becomes dibromoethylcyclohexane.
What colour change occurs when h2o2 is added to kmno4?
MnO4- turns into Mn+2.So purple change into pale pink.
Which nonradioactive halogen occurs as a solid?
bromine (Br2)
What are the symptoms which show that the change is chemical?
1.Precipitation forms 2.Bubbles of gas appear 3.Colour changes occur 4.Temperature occurs 5.Change in volume occurs
How does phenolphthalein work?
Phenolphthalein is an indicator that undergoes a colour change from colourless to pink that begins at a pH of 8.0. So in the titration your performing the phenolphthalein will start to change colour at the point when the moles of acid equal the moles of base. Although this colour change occurs at a pH of 8.0 and not at a pH of 7.0 phenolphthalein is commonly used because of the distinctive colour change that occurs. Phenolphthalein is colourless in acids and pink/purple in base. It also turns orange in very strong acids.
