嗯,改过来了
(1)
n(HCl) = 224/22.4 = 10mol
m(HCl) = 10*36.5 = 365g
所以盐酸的质量分数 = 365/(365+635) = 36.5%
溶液体积 = (365+635)/1.2 = 833mL = 0.833L
所以盐酸的物质的量浓度 = 10/0.833 = 12mol/L
(2)
稀释倍数 = 2/0.01 = 200
所以稀释后物质的量浓度 = 12/200 = 0.06mol/L
嗯,改过来了
(1)
n(HCl) = 224/22.4 = 10mol
m(HCl) = 10*36.5 = 365g
所以盐酸的质量分数 = 365/(365+635) = 36.5%
溶液体积 = (365+635)/1.2 = 833mL = 0.833L
所以盐酸的物质的量浓度 = 10/0.833 = 12mol/L
(2)
稀释倍数 = 2/0.01 = 200
所以稀释后物质的量浓度 = 12/200 = 0.06mol/L