题目

草酸是二元中强酸,草酸氢钠溶液显酸性。常温下,向10 mL 0.01 mol/L NaHC2O4溶液中滴加0.01 mol/L NaOH溶液,随着NaOH溶液体积的增加,溶液中离子浓度关系正确的是A.V(NaOH)= 0时,c(H+)=1 × 10-2 mol/LB.V(NaOH)< 10 mL时,不可能存在c(Na+)=2 c(C2O42-)+ c(HC2O4-)C.V(NaOH)= 10 mL时,c(H+)=1 × 10-7mol/LD.V(NaOH)> 10 mL时,c(Na+)> c(C2O42-)>c(HC2O4-) Let us suppose that you are in____ position of____ parent. Would you allow your child to do such a thing?A.a; aB.a; theC.the; aD.the; the
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