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Ask QuestionPosted by Swapna Shri 6 hours ago
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Gaurav Seth 6 hours ago
Truly speaking p block is a vast chapter , full of reactions and different compounds. But if we arrange the things in a proper way , it's the easiest chapter ever. What I did was group the things together . I took large white sheets and arranged all the electronic configurations, chemical properties, physical properties, oxoacids , allotropes of Group 15 to 18 groupwise. On another sheets I noted down the chemical properties and reactions of different elements of each group like- Sulphur dioxide, Phosphine etc… This arrangement made the chapter easier for me .
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Bhavya Sachdeva 1 day ago
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Posted by Digvijaysingh 2717 2 days ago
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Yogita Ingle 1 day, 23 hours ago
| (i) Tetra phosphorus decoxide (P4O10) | Molecular |
| (ii) Ammonium phosphate (NH4)3PO4 | Ionic |
| (iii) SiC | Network (covalent) |
| (iv) I2 | Molecular |
| (v) P4 | Molecular |
| (vi) Plastic. | Amorphous |
| (vii) Graphite | Network (covalent) |
| (viii) Brass | Metallic |
| (ix) Rb | Metallic |
| (x) LiBr | Ionic |
| (xi) Si | Network (covalent) |
Posted by Gracy Pamai 2 days, 1 hour ago
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Posted by Gracy Pamai 2 days, 1 hour ago
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Posted by Pooja Dhariwal 2 days, 2 hours ago
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Rishab Jain 1 day, 21 hours ago
Posted by Preeti Yadav 2 days, 5 hours ago
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Yogita Ingle 2 days, 5 hours ago
Fluorine is more electronegative than chlorine, therefore, it can attract a shared pair of electron more easily and strongly than chlorine.
Thus, it can easily accept the pair of electrons and undergoes reduction. Thus it is a strong oxidizing agent than chlorine.
Posted by Harmoni Chauhan 2 days, 7 hours ago
- 3 answers
Sahil Ateeque Khan 2 days, 3 hours ago
Adil Abbas 2 days, 5 hours ago
Gaurav Seth 2 days, 7 hours ago
In ionic compounds, electricity is conducted by ions. In solid state, ions are held together by strong electrostatic forces and are not free to move about within the solid. Hence, in molten state or in solution form, the ions are free to move and can conduct electricity.
Posted by Ray Stiles 2 days, 18 hours ago
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Prateeth N 2 days, 19 hours ago
Posted by Avinash Prasad 2 days, 20 hours ago
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Posted by Kritika Parashar 3 days, 1 hour ago
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Gaurav Seth 3 days, 1 hour ago
- On a large scale, ammonia is manufactured by Haber’s process.
- The optimum conditions for the production of ammonia are a pressure of 200 × 105 Pa (about 200 atm), a temperature of ~ 700 K and the use of a catalyst such as iron oxide with small amounts of K2O and Al2O3 to increase the rate of attainment of equilibrium.
Posted by Vishal Kumar 3 days, 4 hours ago
- 1 answers
Gaurav Seth 3 days, 3 hours ago
The reaction is
Here k = 2.5 × 10-4 M s-1
The order of the reaction is zero i.e.,
Rate = k [Reactant]o
Rate = 2.5 × 10-4 × 1 = 2.5 
10-4 mol L-1 S-1
The rate of formation of N2 = 2.5 10-4 mol L-1 S-1
Therefore, rate of formation of H2 = 7.5 × 10-4 mol L-1 S-1
Posted by Avula Mastan 3 days, 5 hours ago
- 1 answers
Gaurav Seth 3 days, 4 hours ago
Volume of H2SO4 (V1) = 30 ml)
Diluted volume of H2SO4 (V2) = 500 ml
Number of moles present in 1000 mL of 0.5 M H2SO4 = 0.5 mol
Initial molarity M1= 0.5 M
We have to find M2 (molarity of 500 ml solution)
M2V2 = M1V1
M2 × 500 = 0.5 × 30
M2 = 15/ 500 = 0.03 M
Posted by Yaar 😍 3 days, 23 hours ago
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Gaurav Bagga 2 days, 22 hours ago
Posted by Lenin Nm 4 days ago
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Yogita Ingle 4 days ago
- In 1880 van’t Hoff introduced a factor i and was named as the van’t Hoff factor.
- The van’t Hoff factor account for the degree of dissociation or association.
- The van’t Hoff factor i can be defined as the ratio of Normal molar mass to the abnormal molar mass. Mathematically,
Posted by Md Fardeen 4 days, 2 hours ago
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Shraddha Kansal 4 days, 1 hour ago
Posted by Miss Sanathoi 4 days, 19 hours ago
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Posted by Kusum Bhattu 6 days, 1 hour ago
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Posted by Sunaina Nazar 6 days, 17 hours ago
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Yogita Ingle 6 days, 5 hours ago
- The chlorofluorocarbon compounds of methane and ethane are jointly called freons.
- They are very stable, non-corrosive, non-toxic, and unreactive liquefiable gases.
- Freon 12 (CCl2F2) is most commonly used Freons in industrial sector.
- Freons are manufactured from tetra chloromethane using Swarts reaction.
- Freons are extensively used in aerosol propellants, refrigerants and air conditioners.
Ayush Mishra 6 days, 6 hours ago
Posted by Arpita 😃 6 days, 18 hours ago
- 1 answers
Yogita Ingle 6 days, 5 hours ago
Fluorine forms only one oxoacid, HOF due to small atomic size and high electronegativity. Fluorine cannot act as central atom in higher oxoacids.
Posted by Shruti Duddi 1 week ago
- 1 answers
Yogita Ingle 6 days, 21 hours ago
Adsorption is always exothermic. This statement can be explained in two ways.
(i) Adsorption leads to a decrease in the residual forces on the surface of the adsorbent. This causes a decrease in the surface energy of the adsorbent. Therefore, adsorption is always exothermic.
(ii) ΔH of adsorption is always negative. When a gas is adsorbed on a solid surface, its movement is restricted leading to a decrease in the entropy of the gas i.e., ΔS is negative. Now for a process to be spontaneous, ΔG should be negative.
ΔG = ΔH - TΔS
Since ΔS is negative, ΔH has to be negative to make ΔG negative. Hence, adsorption is always exothermic.
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Mishti 💕💕🐾🐾 6 hours ago
1Thank You