The balanced redox reaction are given below
2CrO₂⁻(aq) + 2H₂O(l) + 6ClO⁻(aq) →2CrO₄²⁻(aq) + 3Cl₂(g) + 4OH⁻(aq)
The Cl species is oxidizing agent .
There are following steps involve in balanced redox reaction in basic medium .
- Divide the reaction into two half reactions .
- Balance the elements other than oxygen and hydrogen .
- Balance the oxygen atom by adding
.
- Balance the hydrogen atom by adding
.
- Balance the charge by adding
. - Add
on both side - Neutralize by combing and .
- Add the half reaction and simply .
The species which reduces the other species in the redox reaction is called oxidizing agent . Similarly , the species which oxidize the other species in the redox reaction is called reducing agent .
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Answer:
ga
Explanation:
beacuse it its the voltage that high
Explanation:
Alkenes react in the cold with pure liquid bromine, or with a solution of bromine in an organic solvent like tetrachloromethane. The double bond breaks, and a bromine atom becomes attached to each carbon. The bromine loses its original red-brown color to give a colorless liquid. In the case of the reaction with ethene, 1,2-dibromoethane is formed.
The mass in grams of each of the following using dimensional analysis is:
- 6.02 x 10²³ atoms of Mg = 12g of Mg
- 3.01 x 10²³ formula units of CaCl2 = 55.5g of CaCl2
- 12.4 x 10¹⁵ molecules of formaldehyde (CH2O) = 0.000000618g of formaldehyde
<h3>How to calculate mass?</h3>
The mass of a substance can be calculated in different ways depending on whether molecules or moles are given.
First, we need to convert atoms/formula units/molecules to moles as follows:
- 6.02 × 10²³ ÷ 6.02 × 10²³ = 1 mole of Mg
- 3.01 x 10²³ ÷ 6.02 × 10²³ = 0.5 moles of CaCl2
- 12.4 x 10¹⁵ ÷ 6.02 × 10²³ = 2.06 × 10-⁸ moles of formaldehyde
Next, we convert each mole value to mass as follows:
- 1 mole of Mg = 1 × 12 = 12g of Mg
- 0.5 moles of CaCl2 = 0.5 × 111 = 55.5g of CaCl2
- 2.06 × 10-⁸ moles of CH2O = 0.000000618g of formaldehyde
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True! Acid-base reactions will always form water and a salt (not necessarily table salt, though!).
