问题标题:
需要配制1L含0.5molNH4Cl,0.16molKCl,0.24molK2SO4的某营养液,若用KCl,NH4Cl,(NH4)2SO4三种A.0.4,0.5,0.12.B.0.66,0.5,0.24.C.0.64,0.5,0,24.D.0.64,0.02,0.24,物质的量
问题描述:

需要配制1L含0.5molNH4Cl,0.16molKCl,0.24molK2SO4的某营养液,若用KCl,NH4Cl,(NH4)2SO4三种

A.0.4,0.5,0.12.B.0.66,0.5,0.24.C.0.64,0.5,0,24.D.0.64,0.02,0.24,

物质的量

侯勇回答:
  选“D”1L含0.5molNH4Cl,0.16molKCl,0.24molK2SO4的某营养液中含K+0.16+0.24×2=0.64molNH4+0.5molCl-0.66molSO42—0.24mol因此需KCl0.64molNH4Cl0.02mol(NH4)2SO40.24mol
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