Which element is reduced in the reaction below? fe2+ + h+ + cr2o72- → fe3+ + cr3+ + h2o?

Question

delaneyloohoo3539 delaneyloohoo3539

21-04-2018
Chemistry

contestada

Which element is reduced in the reaction below? fe2+ + h+ + cr2o72- → fe3+ + cr3+ + h2o?

Respuesta :

Otras preguntas

What 2 to the power of four (5.2-3.2) divide by 4

594 is 450% of what number?

Give the definition of sequence of real numbers (Xn). Then give 2 example.

Let a set E ={0,2,4,6,8... } of non-negative even numbers and O = {1, 3, 5, 7, 9,...} of non-negative odd numbers then a) Cardinality of set E is greater thanth

Evaluate the following expressions for a = -3, b = 2, c= 5 and d = -4. 4c+d Do not show your work and give a numeric answer only. Give your answer to the neares

Intracellular fluid (ICF) is found in a. interstitial fluid b. plasma c. cytosol d. cerebrospinal fluid e. lymph

A transformer consists of 290 primary windings and 816 secondary windings.

White light (light containing all frequencies of light in the visible spectrum) passes through a diffraction grating with 1300 lines per centimeter, and a scree

slope intercept form

On the Origin of Species was written by _____. Cecil Rhodes Giuseppe Garibaldi Charles Darwin Herbert Spencer

transitionstate transitionstate · Answer 1 · 2018-04-30T16:16:59+02:00

Balance equation for given reaction is,

6 Fe²⁺ + Cr₂O₇²⁻ + 14 H⁺  → 6 Fe³⁺ + 2 Cr³⁺ + 7 H₂O

Oxidation Reaction:

  6 Fe²⁺ → 6 Fe³⁺ + 6 e⁻

Iron has lost 2 electron per mole and 6 electrons per 6 moles. As Fe oxidation state of Fe has changed from +2 to +3 so it has lost one electron and is oxidized.

Reduction Reaction:

Cr₂O₇²⁻ + 6 e⁻ →    2 Cr³⁺

Chromium has gained 3 electrons per mole and 6 electrons per 2 moles. As oxidation state of Cr has changed from +6 to +3 so it has gained 3 electrons and is reduced.