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Calculate the mass of KOH require to make 250 ml 0.2M solution. |
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Answer» 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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