V总=C(K2SO4)*V原/C'(K2SO4)=0.5*200/1000/0.1=1Ln(H2SO4)增=V总*c(H2SO4)终-V原*C(H2SO4)原=2*1-0.5*0.2=1.9MOLV增=N(H2SO4)*98/(98%)/1.84=56.12ML抓住硫酸钾物质的量不变,得到终体积,再求得硫酸物质的量的增量,得到体积增量。思路正确,但计算你自己看吧;)