0
What is the reaction of acidified pot dichromate with Hydrogen Sulphide?
Wiki User
∙ 10y ago
Cr2O72-(aq) + 3SO2 (g) + 2H+(aq)= 2Cr3+ (aq) + 3SO4 2- (aq) H2O (l)
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
What is the reaction between glucose and acidified potassium dichromate and Chemical Equation?
ethanal
What is the reaction between acidified potassium dichromate and ethanol?
ethanol is converted into acetic acid....
Why do you think no reaction occurs between acidified hydrogen peroxide and halide ions other than iodide?
No reaction occurs between the acidified hydrogen peroxide and the other halide ions, because the hydrogen ions involved in both cases are in the same group. For a reaction to occur it needed to have an element that is more reactive than hydrogen.
What is the oxidation equation of the reaction of propanal with potassium dichromate?
water
How cyclohexene mignt be formed as a byproduct in the synthesis of cyclohexanone?
One of the common ways to synthesize ketones is by oxidizing secondary alcohols. Cyclohexanone can be easily prepared from cyclohexanol (or hydroxycyclohexane - same thing) by allowing cyclohexanol to react with potassium dichromate (K2Cr2O7) in the presence of acid. However, some of the cyclohexanol will undergo an elimination reaction because of the acid present and form cyclohexene. Your question is a good example of why it is often important to consider how the reactants should be mixed to get the best results. You would not want to add all of the cyclohexanol to the dichromate solution since performing the reaction that way would maximize the percentage of cyclohexene formed. To limit the extent of the competing elimination reaction, one would want to: 1) Look up the oxidation of secondary alcohols to ketones using potassium dichromate in the literature in order to a. determine the amount of acid needed, and don't use more acid than is necessary, and b. try to find the optimum temp. at which to carry out the reaction. The lower the acid concentration, the less cyclohexene that will be formed. 2) Slowly add the alcohol to a rapidly stirring mixture of an aqueous solution of acidified potassium dichromate. 3) An aqueous solution of acidified potassium dichromate will get warm when it is prepared. It would be best to allow it to cool back to room temp. before beginning the reaction. Once the ketone is formed, it will not react further with acidic dichromate because ketones are difficult to oxidize and dichromate is not a strong enough oxidizer.
Chemical equation for the reaction of acetone and acidified potassium dichromate?
acetone does not react with potassium dichromate
What is the reaction between glucose and acidified potassium dichromate and Chemical Equation?
ethanal
What is the reaction between acidified potassium dichromate and ethanol?
ethanol is converted into acetic acid....
Why are oxidizing agents usually acidified before use?
Mr. Yahya Maharmeh says that the oxidizing agents such as potassium dichromate are acidified to keep the solution acidic, so to provide hydrogen ions since the reaction needs alot of protons
What equation shows the synthesis of cyclohexanone from cyclohexanol and what is this synthesis?
This is an oxidation reaction cyclohexanol with acidified dichromate produces cyclohexanone
What is the word equation for the reaction of sulfur-di-oxide with acidified potassium dichromate?
http://wiki.answers.com/What_is_the_word_equation_for_the_reaction_of_sulphur-di-oxide_with_acidified_potassium_dichromate
What changes acidified potassium dichromate from orange to green?
The chromium in dichromate (Cr2O72-) is reduced from chromium(vi) to chromium(iii) (Cr3+). The former is lemon orange and the latter is green. It's a redox reaction so yuo'll need an reductant to perform this reaction.
Why do you think no reaction occurs between acidified hydrogen peroxide and halide ions other than iodide?
No reaction occurs between the acidified hydrogen peroxide and the other halide ions, because the hydrogen ions involved in both cases are in the same group. For a reaction to occur it needed to have an element that is more reactive than hydrogen.
What type of chemicalreaction is between hydrogen sulphide and oxygen?
Displacement reaction
The corrosion of the metal is an example of?
A reaction with oxygen, water, hydrogen sulphide, acids, bases
Why do silver anklets turn black over time?
It is due to the formation of silver sulphide ,as a result of the reaction between silver and hydrogen sulphide in the air.
Why does silver turn black?
silvers turn black due to the reaction of sulphur present in hydrogen sulphide from air. --- Tarnish is silver oxide (rust) caused by a chemical reaction of oxygen and hydrogen sulphide with the surface of the silver. Unlike iron, silver will not rust in air absent of hydrogen sulphide.
