Mass of NaOH that must be added to water to prepare 500 mL of 2 M aque

1.	Mass of NaOH that must be added to water to prepare 500 mL of 2 M aqueous solution is ?
Answer» 40gmExplanation:MOLARITY (M) : The number of moles of a solute DISSOLVED in 1 L (1000 ml) of the SOLUTION is known as the molarity of the solution.Molarity of a solution(M) = moles of solute (n) / Vol. of solution(LTR)2 = n/0.5n = 1 and moles(n) = GIVEN mass(m) / molar massn = 1 = m/40so w=40gm.Amount of sodium hydroxide present in 500ml of 2M solutions is 40 gm.

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