(1)pH=13的NaOH溶液中氢氧根离子浓度是0.1mol/L,pH=12的氢氧化钠溶液中氢氧根离子浓度是0.01mol/L,设加入水的体积是V
2,C
1V
1=C
2(V
1+V
2)=0.1mol/L×0.1L=(0.1+V
2)L,V
2=
=0.9L=900mL,
故答案为:900;
(2)pH=13的NaOH溶液中氢氧根离子浓度是0.1mol/L,pH=12的氢氧化钠溶液中氢氧根离子浓度是0.01mol/L,pH=10的氢氧化钠溶液中氢氧根离子浓度是0.0001mol/L,
设加入pH=11的NaOH溶液体积是V
2,C
1V
1+C
2V
2=C
3(V
1+V
2)=0.1mol/L×0.1L+0.001mol/L×V
2=0.01mol/L(0.1+V
2),V
2=1L=1000mL,
故答案为:1000;
(3)盐酸的浓度是0.01mol/L,设加入盐酸的体积是V,C(OH
-)=
=
0.1mol/L×0.1L?0.01mol/L×VL |
(0.1+V)L |
=0.01mol/L,v=450mL,
故答案为:450.