题目
电子计算机所用纽扣电池的两极材料为锌和氧化银,电解质溶液为KOH溶液,其电极反应式:Zn+2OH--2e-===ZnO+H2O Ag2O+H2O+2e-== 2Ag+2OH-,下列判断不正确的是··························································( ) A.锌为正极,Ag2O为负极 B.锌为负极,Ag2O为正极 C.原电池工作时,负极区溶液pH减小 D.原电池工作时,正极区溶液pH增大(文)若函数在区间内有零点,则实数a的取值范围是___.