设KNO3,BaSO4,Ba(NO3)2质量为xg,yg,zg
K2SO4 + Ba(NO3)2 ==== 2 KNO3 + BaSO4(沉淀符号)
174 261 202 233
34.8g zg xg yg
174/34.8g=202/xg=233/yg=261/zg
x=40.4 y=46.6 z=52.2
(1)答:质量为40.4g
(2)KNO3%=40.4g/(34.8g+100g+52.2g-46.6g)*100%=28.8%
答:质量分数为28.8%
设KNO3,BaSO4,Ba(NO3)2质量为xg,yg,zg
K2SO4 + Ba(NO3)2 ==== 2 KNO3 + BaSO4(沉淀符号)
174 261 202 233
34.8g zg xg yg
174/34.8g=202/xg=233/yg=261/zg
x=40.4 y=46.6 z=52.2
(1)答:质量为40.4g
(2)KNO3%=40.4g/(34.8g+100g+52.2g-46.6g)*100%=28.8%
答:质量分数为28.8%