一定温度下，三种碳酸盐MCO3（M:Mg2+、Ca2+、Mn2+）的沉淀溶解平衡曲线如下图所示。
已知：pM=－lg c（M），p（CO32－）=－lg c（CO32－）。下列说法正确的是
| A．MgCO3、CaCO3、MnCO3的KSP依次增大 |
| B．a点可表示 MnCO3的饱和溶液，且c（Mn2+）=c（CO32－） |
| C．b点可表示CaCO3的饱和溶液，且c（Ca2+）<c（CO32－） |
| D．c点可表示MgCO3的不饱和溶液，且c（Mg2+）>c（CO32－） |
相关试题
Charles was alone at home, with_______ looking after him.
| A．someone | B．anyone | C．not one | D．no one |
It is often ______ that human beings are naturally equipped to speak.
| A．said | B．to say | C．saying | D．being said |
I can’t leave. She told me that I ______ stay here until she comes back.
| A．can | B．must | C．will | D．may |
—— Do you mind my opening the window? It’s a bit hot in here.
—— ______ , as a matter of fact
| A．Go ahead | B．Yes, my pleasure |
C．Yes, I do | D．Come on |
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