pH = 12 所以c(OH-) = 10^(-2)
pH = 11 所以c(OH-) = 10^(-3)
pH = 10 所以c(OH-) = 10^(-4)
(1) ( 10^(-2) * 0.1 + 10^(-4) * x ) / (0.1+x) = 10^(-3) 解得 x = 1 L = 1000 mL
(2) ( 10^(-2) * 0.1 - 0.1* V ) / ( 0.1 + V ) = 10^(-3) 解得 V = 0.0089 L = 8.9 mL
pH = 12 所以c(OH-) = 10^(-2)
pH = 11 所以c(OH-) = 10^(-3)
pH = 10 所以c(OH-) = 10^(-4)
(1) ( 10^(-2) * 0.1 + 10^(-4) * x ) / (0.1+x) = 10^(-3) 解得 x = 1 L = 1000 mL
(2) ( 10^(-2) * 0.1 - 0.1* V ) / ( 0.1 + V ) = 10^(-3) 解得 V = 0.0089 L = 8.9 mL