Question

Calculate the percentage composition of carbon, hydrogen and oxygen

in C2H5OH. (Atomic mass of carbon, hydrogen and oxygen are 12.01,

1.008 & 16 respectively) -3-

(b) Define (i) Limiting reagent (ii) Molarity​

Answer 1

• The limiting reagent is the reactant that is used up completely. This stops the reaction and no further products are made. ... This method is most useful when there are only two reactants. The limiting reagent can also be derived by comparing the amount of products that can be formed from each reactant.
• Molar concentration is a measure of the concentration of a chemical species, in particular of a solute in a solution, in terms of amount of substance per unit volume of solution.

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