CHEM---CONCENTRATION
What mass of sodium hydroxide NaOH msut be dissolved to make 1dm^3 of a solution of concentration 2M?
answer: 80g
請列步驟!thz
CHEM---CONCENTRATION
2011-04-08 6:13 am
回答 (1)
2011-04-08 6:22 am
✔ 最佳答案
No. of moles of NaOH= MV= 2X1
= 2
Molar mass of NaOH= 23+16+1
= 40g/mol
Since no. of moles= mass/molar mass,
Mass of NaOH= no. of moles X molar mass
= 2 X 40
= 80g
參考: Myself
收錄日期: 2021-04-13 17:54:30
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110407000051KK01295