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2 years ago

Explain oxidation and reduction occur simultaneously

Chemistry

2 answers:

quester [9]2 years ago

8 0

Explanation:

oxidation is adding of oxygen and removal of hydrogen.

Reduction means removal of oxygen and addition of hydrogenm

Vesna [10]2 years ago

4 0

Answer

When oxidation and reduction takes place simultaneously it is called a redox reaction.

Explanation:

Oxidation is the process in which an electron loses an atom, whereas, in reduction an atom gains an atom. when both of these reactions occur simultaneously the process is known as redox.

When a substance is being oxidized, it loses an electron or a hydrogen atom and gains an oxygen atom. Whereas, in reduction it gains an hydrogen atom and loses an oxygen atom. These two cannot happen individually and will always happen simultaneously.

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An aqueous solution contains 0.29 M of benzoic acid (HA) and 0.16 M of sodium benzoate (A-). If the pH of this solution was meas

Inga [223]

Answer:

pKa = 4.89.

Explanation:

We can solve this problem by using the Henderson-Hasselbach equation, which states:

pH = pKa + log $\frac{[A^-]}{[HA]}$

In this case [A⁻] is the concentration of sodium benzoate and [HA] is the concentration of benzoic acid.

We input the given data:

4.63 = pKa + log $\frac{0.16}{0.29}$

And solve for pKa:

pKa = 4.89

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2 years ago

The ""size"" of an atom is sometimes defined by the radius of a sphere that contains 90% of the charge density of the electrons.

vfiekz [6]

Answer:

3/2a

Explanation:

The complete step by step answer is found in the attachment

8 0

3 years ago

Mixed Practice:

AveGali [126]

Given

Mass of NO - 824 g

Molar mass of NO - 30.01g/mol

No of moles of NO = Given mass/Molar mass

No of moles of NO = 824/30.01= 27.45 mole

Hence 27.5 moles of NO are formed!

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2 years ago

Expressed in the correct number of significant figures the sum of 0.53 cm + 75.321 cm + 28.1 cm =

Nadya [2.5K]

Answer:

$\boxed{\text{104.0 cm}}$

Explanation:

When adding or subtracting values, you must round your answer to the same "place" as the measurement with its last significant figure furthest to the left.

That is, you round off to the same number of decimal places as the measurement with the fewest decimal places.

$\begin{array}{r|l}0.5& \text{3 cm}\\+ 75.3& \text{21 cm}\\+ 28.1 & \quad\text{cm} \\= 103.9 &\text{51 cm}\\\end{array}$

The measurement of 28.1 cm has one digit after the decimal point, so you round the sum to have only one digit to the right of the decimal.

However, the number to be dropped (51) is greater than 5 with only zeros or nothing following the 5.

You must round up the answer. You increase the last significant digit by one.

$\text{The sum is $\boxed{\textbf{104.0 cm}}$}$

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2 years ago

A farmer plants corn in nutrient rich soil. The corn plants absorb nutrients from the soil in order to grow and perform life pro

ratelena [41]

Answer:

It will make the soil dry out and lose nutrance, the soil will be unusable in later years. plz give me brainleist

8 0

3 years ago

Explain oxidation and reduction occur simultaneously​

Explain oxidation and reduction occur simultaneously