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Explain calculation of Example 4.1 of Chemical Kinetics

Posted by Naveen Kumar 8 years ago

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Calculate the rate of reactant between two interval. eg- the ΔR1 between 0 to 50 seconds is 1.90 and ΔR2 Between 50 to 100 is 1.70. Here rate of reactant(C4H9Cl) is decrease with time.

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What is soap . How is it prepared ?

Posted by Peerzada Aamena 8 years ago

CBSE > Class 12 > Chemistry

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Galvanic cell become dead after some time

Posted by Gurpreet Kaur 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Kamal Singh Rawat 8 years ago

There are two cases if galvanic cell is dead: 1- if the less amount of CuSo4 in solution. Some time later Cu++(aqua) is not convert copper rod. 2- In this cell after some time the whole Zn electrode convert into Zn++(aqua). so the current is not flow and galvanic cell is dead.

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Points of vbt

Posted by Ayushi Gupta 8 years ago

CBSE > Class 12 > Chemistry

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Sahiba Bhayana 8 years ago

1. In VBT Ligands have atleast one lone pair. 2.The central metal atom makes available the number of empty orbitals for the formation of coordinate bonds. 3. Coordination bond is formed when ligand donate lone pair od electron to the central metal atom. 4. The d- orbital involve hybridization may be either inner (n-1)d or outer(nd). 5.Octahedral ,square planner and tetrahedral complexes are formed as a result of (d²sp³/sp³d²),dsp² and sp³ hybridization respectively of the central metal atom.

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why aniline does not show friedl craft reaction

Posted by Sandeep Kumar 8 years ago

CBSE > Class 12 > Chemistry

2 answers

Kamal Singh Rawat 8 years ago

In aniline, the N is high electron withdrawing group. Due to this they tightly held H in benzene. So it is not show friendal craft reaction

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Itachi Uchiha 8 years ago

Because in friedl craft reaction Luis acid is used which is anhy agcl3 and aniline is basic in nature when they react they form salt but not water because of absence of H2

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Haloarenes and haloalkane

Posted by Ankit Dubey 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Kamal Singh Rawat 8 years ago

CH3Cl, CH3CH2Br and other same types compound are haloalkane because the halogen group elements are make bond in aliphatic compounds. Similar the halogen element make bond with aromatic compound like benzene called haloarenes.

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Why carboxylic acid and their derivatives are not considerd as carbonyl compound?

Posted by Akhilesh Maurya 8 years ago

CBSE > Class 12 > Chemistry

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Organic conversion

Posted by Rohit Duhan 8 years ago

CBSE > Class 12 > Chemistry

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Ethyl amine is soluble in water whereas aniline is not?

Posted by Adarsh Sharma 8 years ago

CBSE > Class 12 > Chemistry

1 answers

Kamal Singh Rawat 8 years ago

Due to large size of aniline.

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Difference between specific conductance and molar conductance

Posted by Ankit Kumar 4 years, 6 months ago

CBSE > Class 12 > Chemistry

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Sia ? 4 years, 6 months ago

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Ozone has greater molecular mass than oxygen but still oxygen is found near the surface of earth while ozone at upper part of atmosphere

Posted by Satyendra Kumar 8 years ago

CBSE > Class 12 > Chemistry

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What is ionic bond

Posted by Arinav Garg 8 years ago

CBSE > Class 12 > Chemistry

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Paul Saab 8 years ago

The bond made between two ions is called an ionic bond

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Why polonium less melting point than tellurium in chalcogen family?

Posted by Prachi Agarwal 8 years ago

CBSE > Class 12 > Chemistry

2 answers

Shobhit Rawat 8 years ago

Polonium is a very rare, radioactive metal. There are 33 different isotopes of the element and all of the isotopes are radioactive. It exists in a variety of states, and has two metallic allotropes. It dissolves easily into dilute acids. Polonium does not exist in nature in compounds, but it can form synthetic compounds in the laboratory. It is used as an alloy with beryllium to act as a neutron source for nuclear weapons. Polonium is a highly toxic element. The radiation it emits makes it very dangerous to handle. It can be immediately lethal when applied at the correct dosage, or cause cancer if chronic exposure to the radiation occurs. So look them u can easily find difference b/w them okkkkk.......

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Shobhit Rawat 8 years ago

Tellurium Tellurium is the metalloid of the oxygen family, with a silvery white color and a metallic luster similar to that of tin at room temperature. Like selenium, it is also displays photoconductivity. Tellurium is an extremely rare element, and is most commonly found as a telluride of gold. It is often used in metallurgy in combination with copper, lead, and iron. In addition, it is used in solar panels and memory chips for computers. It is not toxic or carcinogenic; however, when humans are exposed to too much of it they develop a garlic-like smell on their breaths.

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What is covalent bond

Posted by Arinav Garg 8 years ago

CBSE > Class 12 > Chemistry