Chemistry, asked by vishwacharanreddy201, 1 year ago

K2Cr2O7 + 3H2SO3 + 5H+ ----------->2Cr3+ 3(HSO4)^- + 4H2O
Ratio of equivalents of k2Cr2O7 and H2SO3​

Answers

Answered by hridayeshbb
1

Answer:

Explanation:

his is an oxidation-reduction (redox) reaction:

3 SIV - 6 e- → 3 SVI (oxidation)

2 CrVI + 6 e- → 2 CrIII (reduction)

H2SO3 is a reducing agent, K2Cr2O7 is an oxidizing agent.

Reactants:

H2SO3 – Sulfurous acid

Other names: S(O)(OH)2  Sulphurous acid

K2Cr2O7 – Potassium dichromate

Other names: Potassium dichromateChromium potassium oxide source: , Dipotassium dichromium heptaoxide

Appearance: Red-orange crystalline solid source: wikipedia, accessed: 2019-09-27; Orange-to-red crystals

H2SO4 – Sulfuric acid

Other names: Oil of vitriol , Sulfuric acid, concentrated (> 51% and < 100%) 4, H2SO4

Appearance: Clear, colorless liquid ; Odourless colourless oily hygroscopic liquid ; Colorless to dark-brown, oily, odorless liquid. [Note: Pure compound is a solid below 51°F. Often used in an aqueous solution.]

Products:

KCr(SO4)2 – Chromium potassium sulfate

Other names: Potassium chromium sulfate , Chromium alum, Chrome alum  

Appearance: Dark purple needles or greyish-brown powder when anhydrous

H2O – Water, oxidane

Other names: Water (H2O)

Hydrogen hydroxide (HH or HOH)

Hydrogen oxide

Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas

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