Alkali metals, alkali earth metals, transition metals, noble gases, halogens, and chalcogens
Answer: The correct answer is option (A).
Explanation:
Oxidation : A chemical reaction in which addition of oxygen occurs or removal of hydrogen occurs is called oxidation.
Reduction:A chemical reaction in which elimination of oxygen occurs or addition of hydrogen occurs is called reduction.
In a given reaction,:
![C_6H_{12}O_6+6O_2\rightarrow 6CO_2+6H_2O+Energy](https://tex.z-dn.net/?f=C_6H_%7B12%7DO_6%2B6O_2%5Crightarrow%206CO_2%2B6H_2O%2BEnergy)
- The glucose molecule is getting oxidized into carbon-dioxide. Before oxidation in glucose molecule ratio of carbon and oxygen atom was 1:1 which changes to 1:2 after oxidation of glucose into carbon-dioxide.
Hence,
is getting oxidized.
- The oxygen molecule is reduced because addition of hydrogen atoms are taking place in oxygen molecules which gives water after reduction.
Hence,
is getting reduced.
So, correct answer is option (A).
Answer:
2.5 L.
Explanation:
- We can use the general law of ideal gas: <em>PV = nRT.</em>
where, P is the pressure of the gas in atm.
V is the volume of the gas in L.
n is the no. of moles of the gas in mol.
R is the general gas constant,
T is the temperature of the gas in K.
- If n and T are constant, and have two different values of V and P:
<em>P₁V₁ = P₂V₂
</em>
P₁ = 5.0 atm, V₁ = 3.5 L.
P₂ = 7.0 atm, V₂ = ??? L.
<em>∴ V₂ = P₁V₁/P₂ </em>= (5.0 atm)(3.5 L)/(7.0 atm) = <em>2.5 L.
</em>
<span>An ionic compound forms → Ions are attracted to each other → Electrons are transferred
Hope this helps</span>