How many grams of KCl would I need in order to make 250 mL of a 0.25 M KCl solution.?
回答 (1)
2016-05-17 11:12 am
✔ 最佳答案
Number of moles of KCl= Molarity × (Volume of solution in L)
= (0.25 mol/L) × (250/1000 L)
= 0.0625 mol
Molar mass of KCl = (39.01 + 35.45) = 74.46 g/mol
Mass of KCl
= (Number of moles) × (Molar mass)
= (0.0625 mol) × (74.46 g/mol)
= 4.65 g
收錄日期: 2021-04-18 14:49:51
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