衢州市2018年高一化学竞赛试题

                                   。Р(4)化学方程式为                                                                                                      。Р四、(本题包括2小题,共16分)Р29.(4分)Р1号是,2号是,3号是,4号是。Р30.(12分)Р(1)检查装置的气密性方法                                                                                                 Р                                                                                                                                   。Р(2)目的是                                                                                                    。Р(3)③反应结束后,                                                              ;Р(4)① x= 。Р②比较大小:x 3;Р判断的理由:             Р 。Р五、(本题包括2小题,共18分)Р31.(8分)Р(1)X的组成元素为H、O和,C的电子式为。Р(2)反应①的离子方程式: 。Р32.(10分)Р(1)体积为 L。Р(2)物质的量浓度。Р(3)Р化学式Р物质的量(mol)Р(4)固体的成分。Р(5)x= 。