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Yogita Ingle 6 years ago
The rate of reaction increases considerably with an increase in temperature.
The rates of many reactions are approximately doubled or tripled for every 10oC rise in temperature.
The temperature coefficient of a chemical reaction is defined as the ratio of the specific reaction rates of a reaction at two temperature differing by 10oC.
μ = Temperature coefficient= k(r+10)/kt
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Yogita Ingle 6 years ago
In Lithium fluoride the lattice enthalpy is very high due to small size of fluoride ions. In this case the hydration enthalpy is very less. Hence, LiF is insoluble in water.
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Yogita Ingle 6 years ago
It is one of the most widely used unit of concentration and is denoted by M. It is defined as no. of moles of solute present in 1 liter of solution. Thus,
Molarity = No. of moles of solute/Volume of solution(in Litres)
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Yogita Ingle 6 years ago
A general stabilizing interaction which involves the delocalization of sigma electrons of a C-H bond of an alkyl group directly attached to an unsaturated system (or) to a species with an unshared p -orbital such as Carbocations (or) free radicals is known as hyperconjugation. Hyperconjugation is a permanent effect.
Ex: Hyperconjugation in ethyl carbo cation.
One of the carbon-hydrogen bonds of the methyl group aligns in the same plane with the empty p -orbital of the positively charged carbon atom.
Farhat Shaikh Shaikh 6 years ago
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Yogita Ingle 6 years ago
Mass of a neutron is 1.008930 amu (1.6753 x 10–24g or 1.6753 x 10–27 kg)
Neutron “A sub-atomic particle, which is a fundamental constituent of matter having mass approximately equal to the hydrogen atom and which is electrically neutral, is called a neutron”.
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