1 氢离子H+ ,H2SO4 = 2H+ + SO42-
2 500ml=500cm3
1.84g/cm3 × 500cm3 = 920g
920g × 98% = 901.6g
3 200g × 20% = 40g
40g ÷ 98%= 40.82g
40.82g ÷ 1.84g/cm3 = 22.18cm3 = 22.18ml 该溶液
200g × (1-20%) = 160g
160g ÷ 1g/cm3 = 160cm3 = 160ml 水
1 氢离子H+ ,H2SO4 = 2H+ + SO42-
2 500ml=500cm3
1.84g/cm3 × 500cm3 = 920g
920g × 98% = 901.6g
3 200g × 20% = 40g
40g ÷ 98%= 40.82g
40.82g ÷ 1.84g/cm3 = 22.18cm3 = 22.18ml 该溶液
200g × (1-20%) = 160g
160g ÷ 1g/cm3 = 160cm3 = 160ml 水