标况下VLHCl溶于1L水中密度为p的盐酸溶液,此溶液物质的量的浓度是A.1000Pv/(36.5v+1000)B.1000Pv/(v+1000) C.1000Pv/(36.5v+22400) D.vP/36.5
问题描述:
标况下VLHCl溶于1L水中密度为p的盐酸溶液,此溶液物质的量的浓度是
A.1000Pv/(36.5v+1000)
B.1000Pv/(v+1000)
C.1000Pv/(36.5v+22400)
D.vP/36.5
答
HCl物质的量:V/22.4 mol
HCl质量:36.5V/22.4 g
溶液质量:1000 + 36.5V/22.4 g
溶液体积:(1000 + 36.5V/22.4)/p mL = (1000 + 36.5V/22.4)/(1000p) L
溶液物质的量的浓度:1000Vp/[(1000 + 36.5V/22.4)*22.4]
= 1000Pv/(22400 + 36.5V)
C