Viruj Pharmaceuticals Chemist Interview Questions and Answers

Mole equivalent is the amount of a substance that reacts with one mole of another substance.

• Mole equivalent is used to determine the amount of reactants needed in a chemical reaction.

• It is calculated by dividing the number of moles of a substance by its stoichiometric coefficient.

• For example, in the reaction 2HCl + Mg → MgCl2 + H2, one mole of Mg reacts with 2 moles of HCl, so the mole equivalent of Mg is 0.5.

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Molarity is the concentration of a solution expressed as the number of moles of solute per liter of solution.

• Molarity = moles of solute / liters of solution

• Glucose formula: C6H12O6

• Molar mass of glucose: 180.156 g/mol

• If we dissolve 1 mole of glucose in 1 liter of solution, the molarity will be 1 M

• To calculate the molarity of glucose, we need to know the mass of glucose and the volume of the solution