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The two relevant half-equations are:
[1] SO2 + 2H2O --> (SO4)2- + 4H+ + 2e
[2] (Cr2O7)2- + 14H+ + 6e --> 2Cr3+ + 7H2O
Multiply [1] by 3; add together; cancel down H+ and H2O. Giving:
3SO2 + (Cr2O7)2- + 2H+ --> 3(SO4)2- + 2Cr3+ + H2O
(The potassium ions are spectator ions)
Edit: Can the answerer please give the complete equation? The ionic one is pretty "obvious"; I would prefer the full one. Thanks
What else can I help you with?
Why is the reaction SO2 plus H2O H2SO2 not balanced?
there are more oxygen atoms on one side than on the other
What is the symbol equation for the reaction of sulphur with oxygen?
The symbol equation for the reaction of sulfur with oxygen is: S + O2 → SO2
What happens when SO2 reacts with H2S?
When sulfur dioxide (SO2) reacts with hydrogen sulfide (H2S), sulfur is produced. The overall reaction can be written as: SO2 + 2H2S → 3S + 2H2O This reaction is often used in the production of elemental sulfur or in environmental processes to remove sulfur compounds from gases.
What is the formula for patassium dichromate?
The chemical formula of potassium dichromate is K2Cr2O7
How do you make 0.25N K2Cr2O7 solution?
To prepare a 0.25N K2Cr2O7 solution, you would dissolve 12.43 grams of K2Cr2O7 in enough water to make 1 liter of solution. This will give you a molarity of 0.25N for potassium dichromate (K2Cr2O7) in the solution.
Symbolic equation for the reaction between potassium dichromate and barium chloride?
I think the reaction equation can be written as follows: K2Cr2O7 (aq) + BaCl2(aq) ------ BaCr2O7(s) + 2KCl(aq).
What is the reaction between potassium permanganate and SO2?
This reaction is the following:2 KMnO4 + SO2 = 2 MnO2 + K2SO4
What is the chemical reaction between hydrogen peroxide and K2Cr2O7?
The chemical reaction between hydrogen peroxide (H2O2) and potassium dichromate (K2Cr2O7) in acidic medium produces chromium(III) sulfate (Cr2(SO4)3), water (H2O), and oxygen gas (O2). This reaction is used in the laboratory to test for the presence of alkenes due to the oxidizing properties of potassium dichromate.
Why is the reaction SO2 plus H2O H2SO2 not balanced?
there are more oxygen atoms on one side than on the other
What is the chemical equation for CaO and SO2?
The chemical equation for the reaction between calcium oxide (CaO) and sulfur dioxide (SO2) is: CaO + SO2 → CaSO3
How many moles of CS2 form when 3 moles of SO2 reacts?
If 3 moles of SO2 reacts, then 3 moles of CS2 will form since the reaction ratio between SO2 and CS2 in the reaction is 1:1.
What is the symbol equation for the reaction of sulphur with oxygen?
The symbol equation for the reaction of sulfur with oxygen is: S + O2 → SO2
What is the balanced equation for sulfur dioxide when added to a container of carnon dioxide?
CO2 + SO2 --> CO2 + SO2 There is no reaction.
How many sulfur atoms are in the chemical reaction H2S plus SO2 plus H2?
There are 2 sulfur atoms in the chemical reaction H2S plus SO2 plus H2.
Why H2SO4 is added in K2Cr2O7 during oxidation of alcohol?
H2SO4 is added in the oxidation of alcohols with K2Cr2O7 as a catalyst to provide acidic conditions, which facilitate the oxidation reaction. The sulfuric acid protonates the alcohol to form an oxonium ion, which is more easily oxidized by the chromate ion in K2Cr2O7. This helps to increase the efficiency and speed of the oxidation process.
Sulphur burning in oxygen?
The reaction is: S + O2 = SO2
Why you are using K2Cr2O7 for chloride test explain reaction?
Potassium dichromate react with chlorides (adding sulfuric acid) and form chromyl chloride; this compound is released as specific red fumes. The reaction is: K2Cr2O7 + 4Cl- + 6H2SO4 --- → 2CrO2Cl2 + 2KHSO 4 + 4HSO 4-+3H2O
