Applications of Kohlrausch's Law
Calculation of molar conductivity at infinite dilution (A o ) for weak electrolytes. Example: CH 3 COOH The value of for KCl, CH 3 COOK and HCl can be obtained by extrapolation (they are strong electrolytes). ..
Calculation of molar conductivity at infinite dilution (A o ) for weak electrolytes. Example: CH 3 COOH The value of for KCl, CH 3 COOK and HCl can be obtained by extrapolation (they are strong electrolytes). ..Solution
(a) Molecular formula of butane = C 4 H 1 0 Molecular mass of butane = 4 x 12 + 10 x 1 = 58 Heat of combustion of butane = 2658kJmol - 1 1 mole of 58 g of butane on complete combustion give heat = 2658 kJ 14 x 10 3 g of butane on complete combustion gives heat = The family needs 20,000 kJ o..
(a) Molecular formula of butane = C 4 H 1 0 Molecular mass of butane = 4 x 12 + 10 x 1 = 58 Heat of combustion of butane = 2658kJmol - 1 1 mole of 58 g of butane on complete combustion give heat = 2658 kJ 14 x 10 3 g of butane on complete combustion gives heat = The family needs 20,000 kJ o..Uses
It has very low co-efficient of expansion and can withstand sudden changes in temperature. Therefore highly suitable for laboratory ware like flasks, beakers and oven proof cook ware..
Temperature
An increase in temperature usually, increases the rate of a reaction. Cooking at sea level takes less time than on the mountain top because water boils at higher temperature at sea level than at the mountain to..
Introduction
Man's quest for sources of energy is inexhaustible. Early man depended mainly on muscular energy and later began to use wind and flowing water as sources of energy. He learned the art of making and controlling fire. Fire became his source of light at night. He used fire for warmth and realized that..
Introduction
Apart from air, the most abundant substance on the earth is water. Humans need water for drinking, bathing, sanitation, washing, cooking etc. Modern agriculture, industry, transport, power generation, civic facilities etc., cannot exist without wate..
Effect of Temperature
Generally, the rates of chemical reactions increase with increase in temperature. It is a common observation that perishable foods like milk, cooked vegetables decay more quickly in summers than in winter. Consider the chemical reaction: At 273 K, the reaction is extremely slow and ..
Generally, the rates of chemical reactions increase with increase in temperature. It is a common observation that perishable foods like milk, cooked vegetables decay more quickly in summers than in winter. Consider the chemical reaction: At 273 K, the reaction is extremely slow and ..Introduction
Man's quest for sources of energy is inexhaustible. Early man depended mainly on muscular energy and later began to use wind and flowing water as sources of energy. He learned the art of making and controlling fire. Fire became his source of light at night. He used fire for warmth and realize..
Solution
The fuel efficiency can be predicted from the amount of heat evolved for every gram of fuel consumed. (i) The combustion of methane is as follows: D H c = 1559.7kJmol - 1 Molar mass of C 2 H 6 = 30..
The fuel efficiency can be predicted from the amount of heat evolved for every gram of fuel consumed. (i) The combustion of methane is as follows: D H c = 1559.7kJmol - 1 Molar mass of C 2 H 6 = 30..Biomass fuels
These are material contained in the bodies of plants, and animals, which can be used as a fuel or act as a source of fuel. Typical examples of Biomass are, wood, animal dung, agricultural waste (such as, baggasse), wild grass and plants etc. Biomass is a conventional source of energy in rural area..
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