[sc_fs_faq html=”true” headline=”h2″ img=”” question=”What is Nuclear Energy?” img_alt=”” css_class=””] The liberation of large amount of energy by the nuclear chain reaction or nuclear fission is called nuclear energy. [/sc_fs_faq] The fission of U235 or Pu239 occurs instantaneously producing large amount of energy in the form of heat and radiation. Calculation of energy released due to nuclear fission Consider

Nuclear chain reaction is defined as a fission reaction where the neutrons from a previous step continue to propagate and repeat the reaction. We know that U235 when bombarded hit by a neutron undergoes the following fission reaction: 92U235 + 0n1 → 56Ba140 + 36Kr93 + 30n1 + Energy  In this reaction three neutrons are produced. These

In a nuclear fusion two light-weight nuclei combine or fuse to form a single heavy nucleus., with the simultaneous release of large amount of energy. For example, two nuclei of deuterium undergo fusion reaction to yield a heavy nucleus of helium. 1H2+1H2 →2He4+ 0n1 + Energy The Sun is a main-sequence star, and thus generates its

In many cases corrosion can be effectively controlled by changing or modifying the corrosive environment by: The corrosion nature is reduced by modifying the environment: the removal of harmful constituents in the environment and the addition of specific substances, which neutralise the effect of corrosive constituents of the environment. 1. Deaeration Presence of more amount

The rate and extent of corrosion depends on: Nature of the environment Nature of the metal. S.No Environment based factors Metal based factors 1 Temperature. Position of metal in galvanic series. 2 Humidity. Relative area of electrode. 3 Presence of impurities in atmosphere. Over voltage. 4 Influence of pH. Purity of metal. 5 Nature of

There are two types of electrochemical Corrosion: Galvanic corrosion Differential aeration or Concentration cell corrosion Galvanic corrosion When two dissimilar metals are in contact with each other on the presence of aqueous solution or moisture, galvanic corrosion occurs. The more active metal (with high negative electrode potential and higher in the electrode potential and higher

Based on the corrosion of metals in the nature of the environment it is classified into two types: Dry or chemical corrosion. Wet or electrochemical corrosion. S.No Dry or chemical corrosion Wet or electrochemical corrosion 1 Occurs in a dry state. Occurs in the presence of moisture of electrolyte. 2 Involves direct chemical attack on

Chemistry of Corrosion Most of the metals (except noble metals like gold, platinum etc.) exist in nature as ores (metallic oxide, sulphide, carbonate, silicate etc.). By metallurgical operations, these ores are converted into pure metals. The pure metal will always have higher energy than its ore or metallic compound. The pure metal at higher energy

The following are some examples for corrosion that we experience in our day to day life. (i) Rusting of iron : Iron exposed to the environment forms a brown rust film on its surface. (ii) Water stored in aluminium vessel : If water is stored for a long time in an aluminium vessel, white spots

Here are a few simple electrochemistry solved problems along with their solutions: 1. Calculate the single electrode potential of copper metal immersed in 0.15°MCu2+ solution. E° for copper is +0.34 V at 25°C. Solution: By Nernst equation [latex] \mathrm{E}=\mathrm{E}^{\circ}+\frac{0.0592}{\mathrm{n}}\left[\log \mathrm{M}^{\mathrm{n}+}\right] at 25^{\circ} \mathrm{C} [/latex] [latex] \begin{aligned} & =0.34+\frac{0.0592}{2} \log [0.15] \\ & =0.34+\frac{0.0592}{2}(-0.8239)=0.3156 \mathrm{~V} \end{aligned} [/latex] 2. Calculate the electrode potential of