Driving a car is not so difficult as you imagine, if you _____ the rules. A. depend on B. believe in C. turn to D. stick to 答案:D下列说法正确的是
A.室温时某溶液的pH<7,则该物质一定是酸或强酸弱碱盐
B.已知室温时,0.1mol·L-1某一元酸HA的电离平衡常数为1×10-7,则该酸的电离度约为0.01%
C.0.02mol·L-1CH3COOH溶液和0.01mol·L-1NaOH溶液等体积混合,则溶液中:
2c(H+) + c(CH3COOH) = 2 c(OH-) + c(CH3COO-)
D.在温度不变的条件下向CaSO4饱和溶液中加入Na2SO4溶液,CaSO4将会析出,但Ksp不会发生改变