Calculate the mass of KOH require to make 250 ml 0.2M solution.
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Correct question :- Calculate the mass of KOH required to make 250mL of 0.2 M solution.
Answer:- 2.8g.
Explanation :- Let the required mass of KOH be 'x' g. • Molar mass of Potassium (K) = 39g/mol. • Molar mass of Oxygen (O) = 16g/mol. • Molar mass of Hydrogen (H) = 1g/mol. Hence, molar mass of KOH :- = 39+17+1. = 56g/mol.
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