(1)将0.20 mol CaCl2 (s)加入 https:/img.zuoyebang.cc/zyb_4839a29d0ccbec41ef5be5d1dc3f3722.jpg.0LNaHC(O)_(3)-(Na)_(2)C(O)_(3) 缓冲溶液中 [ c((HC{O)_(3)}^-)=c-|||-.((C{O)_(3)}^2-)=1.0molcdot (L)^-1 ,忽略加入CaCl2(s)后所引起的体积变化]。①计算该缓冲溶-|||-液pH的变化;②是否有Ca(OH )2沉淀产生?③此时溶液中残留的 ^2+ 浓度是多-|||-少?(已知 _{a2)^theta ((H)_(2)C(O)_(3))=4.7times (10)^-11 ,_(sp)^theta [ Ca((OH))_(2)] =4.6times (10)^-6 ,_(sp)^theta (CaC(O)_(3))=-|||-..9times (10)^-9 }。

θ^2 .https:/img.zuoyebang.cc/zyb_cc1d55810cc7d52776d9633cf4097f0a.jpg-20-|||-其中

设线性方程组_(1)+(x)_(2)+(x)_(3)=0-|||-x https:/img.zuoyebang.cc/zyb_11f7ffe17b3d923f0

0 0-|||-0 -1 https:/img.zuoyebang.cc/zyb_a1ba310a0e07780ae8da18641bf0a900.jpg-(a

https:/img.zuoyebang.cc/zyb_c0fbf0d3ab9a0b30a20e47b6f2b25ba5.jpg-a-|||-C.α^2 D.

... .-|||-0 0 ... https:/img.zuoyebang.cc/zyb_f80a6fcb675eca65c2e3c810106ea5ab.j

https:/img.zuoyebang.cc/zyb_e8bd054ef3dd65e8f324cadbf8b2d8a0.jpg-beta , 且β已知 E.

.0mol/L NaN(O)_(3) 溶液-|||-C. .0mol/L AgN(O)_(3) 溶液 D. https:/img.zuoyebang.cc/

https:/img.zuoyebang.cc/zyb_7951f03ce916a2297d2b38782b6a2474.jpg+(a)^2-|||-https

5-12 用SO2含量为 https:/img.zuoyebang.cc/zyb_434dea94d0f8a0c38b72f7c69f32418d.jpg.1t

X=2 =0.3 , X=4 =0.5 ,则下列选项正确-|||-的是 ()-|||-A 当 https:/img.zuoyebang.cc/zyb_7f1da