Chemistry

Chemistry, 12.11.2019 05:31, mariahrpoulin9630

Write the net ionic equation for the reaction of potassium dichromate(vi), k2cr2o7 with sodium sulphite, na2so3, in an acid solution to give chromium(iii) ion and the sulphate ion.

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Chemistry, 26.06.2019 16:10, firenation18

Q. when a pink aqueous solution of potassium permanganate, faintly acidified with dilute sulfuric acid was treated with 10% aq. hydrogen peroxide, the reaction took place with the evolution of gas bubbles, and the pink solution was turned colorless. further chemical analysis revealed that the evolved gas was oxygen, and the resulting solution contains potassium sulfate and manganese (ii) sulfate; water was also formed during the same reaction. answer the followings: 1) write down the balanced chemical equation for this reaction. 2) define the type/types of the reaction; assign the oxidation number of manganese in potassium permanganate and manganese (ii) sulfate. also, offer an explanation for the color change. 3) write down the ions present in the solution before & after the reaction. if 100 ml 0.5 m potassium permanganate was mixed with 50 ml 2 m sulfuric acid, what will be the final ph (> 7 or < 7) of the solution? 4) after the completion of reaction, when evolution of gas-bubbles ceased, what will happen if an aqueous solution of sodium carbonate was added to the reaction mixture? write down the net ionic equation. 5) if initially 5.65 g of potassium permanganate was taken for the reaction, calculate the total mass of manganese (ii) sulfate present in the solution after the completion of the reaction. what is the potassium ion concentration of the solution (assume that the total volume of the final reaction mixture is 500 ml)?

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Chemistry, 20.07.2019 09:00, dm21930

Write a balanced chemical equation for the standard formation reaction of solid potassium dichromate k2cr2o7

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Chemistry, 08.08.2019 04:20, alyo31500

Apopular way in chemistry to demonstrate oxidation states is to show the color changes that occur as chromium is reduced. a. a solution of potassium dichromate is reduced to chromium(ll) ions by zinc metal in the presence of an acid causing the solution to change in color from orange to green. what is the oxidation state of the chromium in the potassium dichromate molecule? b. write the balanced half reactions and net ionic equations for this reaction. c. this green solution of chromium (ll) can be further reduced by zinc metal to a blue solution containing chromium(ll) ions. write the balanced half reactions and net ionic equation for this reduction

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Chemistry, 08.10.2019 23:30, mvazquez298

What is the mole fraction of potassium dichromate, k2cr2o7, in a solution prepared from 24.42 g of potassium dichromate and 240. g of water? report your answer in scientific notation with three significant figures

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Write the net ionic equation for the reaction of potassium dichromate(vi), k2cr2o7 with sodium sulph...

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