How many moles of ions are there in 1.19g of sodium sulphate (Na2so4) ?
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2006-12-21 4:25 am
回答 (1)
2006-12-21 6:02 am
✔ 最佳答案
Molar mass of Na2SO4 = 2x23 + 32.1 + 4x16 = 142.1 g mol-1 Mass of Na2SO4 = 1.19 g
No. of moles of Na2SO4 = mass / molar mass = 1.19 / 142.1 = 0.00837 mol
Each mole of Na2SO4 contains 3 moles of ions (2 moles of Na+ and 1 moles of SO42-).
No. of moles of ions = 3 x 0.00837 = 0.0251 mol
收錄日期: 2021-04-25 19:44:35
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