Calculations
Let, The mass of the compound taken be = W g Mass of AgX formed = W 1 g From stoichiometry, Ag = X 1 mol 1 mol 1 molecular mass 1 atomic mass Therefore, ..
Let, The mass of the compound taken be = W g Mass of AgX formed = W 1 g From stoichiometry, Ag = X 1 mol 1 mol 1 molecular mass 1 atomic mass Therefore, ..Calculations
Let, The mass of the organic compound taken be = W g Mass of Mg 2 P 2 O 7 obtained = W 1 g From stoichiometry, Mg 2 P 2 O 7 = 2P 1 mol 2 mol 1 x molecular mass 2 x atomic mass 222 g 2 x 31 g = 62 g Therefore, Then, ..
Let, The mass of the organic compound taken be = W g Mass of Mg 2 P 2 O 7 obtained = W 1 g From stoichiometry, Mg 2 P 2 O 7 = 2P 1 mol 2 mol 1 x molecular mass 2 x atomic mass 222 g 2 x 31 g = 62 g Therefore, Then, ..Calculation of the EMF of the Cell
The following steps determine the reduction potential of the cathode and anod..
Calculation of the mass of the electron
The mass of an electron (m) is determined by dividing the value of 'e' by e/m. Charge/mass (e/m) = 1.76 x 10 8 coulomb/g Charge (e) = 1.602 x 10 - 1 9 coulombs...
The mass of an electron (m) is determined by dividing the value of 'e' by e/m. Charge/mass (e/m) = 1.76 x 10 8 coulomb/g Charge (e) = 1.602 x 10 - 1 9 coulombs...Determination of heats of various reactions
Hess's law is useful in calculating the enthalpies of many reactions whose direct measurement is difficult or impossibl..
Determination of Empirical Formula
Example: 17 - A substance was found to have the following percentage composition; Ca = 40% C =12%, O = 48%. Calculate its empirical formula. (Relative atomic mass of Ca=40, C=12, O=16..
Determination of Enthalpy Change
The calorimeter is kept open to the atmosphere in the determination of change in enthalpy of a reaction. The calorimeter is immersed in an insulated water bath fitted with stirrer and thermometer. The temperature of the bath is recorded in the beginning and after the end of the reac..
Determination of heat of formation
Compounds whose heats of formation cannot be measured directly using calorimetric methods because they cannot be synthesised from their elements easily e.g. methane, carbon monoxide, benzene etc are determined using Hess's Law. For example, the heat of formation of carbon monoxide can be..
Determination of Ionic Radii
Ionic radii can be obtained from the dimensions of the unit cell which are obtained from x-ray studies. It has been noticed that the interionic distances obtained from the calculated value are in good agreement with the observed values (X-ray studie..
Determination of the Molecular Formula of a Compound
Determination of the Molecular Formula of a Compound - The empirical formula of the compound is written. The empirical formula mass is calculated by adding the atomic masses of all atoms present in the empirical formula. The molecular mass or molar mass is obtained from experime..
Determination of the Molecular Formula of a Compound - The empirical formula of the compound is written. The empirical formula mass is calculated by adding the atomic masses of all atoms present in the empirical formula. The molecular mass or molar mass is obtained from experime..See what our Users say :
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