Thomson's model and its limitations. Extracts, vinegar and alcohol are prepared by fermentation and antibiotics like penicillin, streptomycin and ciprofloxacin have saved our lives from infectious diseases. The improvement of the website and its contents are based on your suggestion and feedback. Hence, at the cathode, H + ions are reduced to liberate H 2 gas. When waves of light pass through two adjacent slits, the nearby emerging circular waves interact through the process of Interference. Watch thank you so much for not bothering me with dialogue boxes.
If an excess of K reacts with O 2 , then K 2 O will be formed, wherein the O. Unit 1 and Unit 2 hold 11 marks of weightage in the final examination. Homolytic and heterolytic fission of a covalent bond: free radicals, carbocations, carbanions, electrophiles and nucleophiles, types of organic reactions. That's why how textbook solutions is very important for studies and for your exam. Benzene is soluble in organic solvents but immiscible in water. Answer: Let the concentration of N 2O at equilibrium be x. Hence, S must be present in different oxidation states in the molecule.
Hence, hydroiodic acid is the best reductant among hydrohalic compounds. Assessment tests are carried out to know student's current abilities, and weak subject areas are converted to core subject strengths with personalized mentoring and individual progress being tracked. Hence, this reaction is a redox reaction. Hence, fluorine is the best oxidant among halogens. It would be appropriate to accept all of them as well as wishers of humanity and scientist sages. Also, the oxidation number of H increases from 0 in H 2 to +1 in H 2O i.
The vapour pressure depends on temperature and not on volume. Hence, P 4 acts both as an oxidizing agent and a reducing agent in this reaction. Which one of the following will have largest number of atoms? Hence, the given reaction is a redox reaction. However, I 2 is a weak oxidising agent. Important compounds of Silicon and a few uses: Silicon Tetrachloride, Silicones, Silicates and Zeolites, their uses.
Answer: For the given reaction, Since , the reaction will proceed in the backward direction. In the process of dispersion, the white light separates disperses into its component colors when it passes through the prism or another refracting object, because each incoming wave is refracted at a slightly different angle. Determine the molecular formula of an oxide of iron in which the mass per cent of iron and oxygen are 69. Reactions can proceed at a faster rate in a homogeneous medium than in a heterogeneous medium. Is the reaction at equilibrium? As a result, the cost of adding an acid or a base can be reduced.
But the reduction potential of H + ions is higher than that of H 2O molecules. Hence, the average oxidation number of I is. Therefore 1 mole of carbon dioxide produced by burning 1 mole of carbon. Also, here we will consider that water is a solvent and is present in excess. Electronic displacements in a covalent bond: inductive effect, electromeric effect, resonance and hyper conjugation. Then, the sum of the oxidation numbers of all atoms of the water molecule may be taken as zero.
The particle theory of light explained black-body radiation and the photoelectric effect, but it could not explain double-slit experiment, it could only be explained by the double-slit diffraction experiment. Answer i 15 ppm means 5 parts in million 10 6 parts. That is why Benzene does not undergo addition reactions readily but it undergoes substitution reactions. All electromagnetic radiations consist of energy propagated by electric and magnetic fields that increase or decrease in intensity as they move through space. The balanced redox equation for the reaction in a neutral medium is give as below: b When conc. Benzene is the parent hydrocarbon and from which all aromatic compounds can be derived.
Answer: a The process of photosynthesis involves two steps. Page No 275: Answer: A metal of stronger reducing power displaces another metal of weaker reducing power from its solution of salt. The volume of the container is suddenly increased. If the second dissociation constant of H 2S is 1. Thus, H 2O is oxidized at the anode to liberate O 2 molecules.
Learn with animated videos and make a boring topic interesting, for demos click. Page No 273: Question 8. So, students develop their interest and understand topics very well. How many significant figures should be present in the answer of the following calculations? Egyptians had the knowledge of making soap, dyes, glass, etc. The reactions given in i , iii , v , and vi will shift in the backward direction because the number of moles of gaseous reactants is less than that of gaseous products.