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The rate constant for a first order reaction is 60 s−1. How much time will it take to reduce the initial concentration of the reactant to its `1/16`th value?
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For the decomposition of azoisopropane to hexane and nitrogen at 543 K, the following data are obtained.
| t (sec) | P(mm of Hg) |
| 0 | 35.0 |
| 360 | 54.0 |
| 720 | 63.0 |
Calculate the rate constant.
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The time required for 10% completion of a first order reaction at 298 K is equal to that required for its 25% completion at 308 K. If the value of A is 4 × 1010 s−1. Calculate k at 318 K and Ea.
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What is the significance of leaching in the extraction of aluminium?
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How can you separate alumina from silica in a bauxite ore associated with silica? Give equations, if any.
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How is leaching carried out in case of low grade copper ores?
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Indicate the type of isomerism exhibited by the following complex and draw the structure for the isomer:
K[Cr(H2O)2(C2O4)2]
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Indicate the type of isomerism exhibited by the following complex and draw the structure for the isomer:
[Co(en)3]Cl3
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Indicate the type of isomerism exhibited by the following complex and draw the structure for the isomer:
[Co(NH3)5(NO2)](NO3)2
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Indicate the type of isomerism exhibited by the following complex and draw the structure for the isomer:
[Pt(NH3)(H2O)Cl2]
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How many geometrical isomers are possible in the following coordination entity?
[Cr(C2O4)3]3−
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How many geometrical isomers are possible in the following coordination entity?
[Co(NH3)3Cl3]
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Draw the structure of optical isomers of [Cr(C2O4)3]3−.
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Draw the structure of optical isomers of [PtCl2(en)2]2+.
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Draw the structure of optical isomers of [Cr(NH3)2Cl2(en)]+.
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Draw all the isomers (geometrical and optical) of [CoCl2(en)2]+.
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Draw all the isomers (geometrical and optical) of [Co(NH3)Cl(en)2]2+.
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Draw all the isomers (geometrical and optical) of [Co(NH3)2Cl2(en)]+.
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Write all the geometrical isomers of [Pt(NH3)(Br)(Cl)(py)] and how many of these will exhibit optical isomers?
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Low level of noradrenaline is the cause of depression. What types of drugs are needed to cure this problem? Name two drugs.
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