<img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/9158d2c99fcc414f87d20b563a6f22f7.png?x-oss-process=image/sharpen,200"/>用硫酸溶液处理再结晶，<img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/1c55ef1ca6d142beb875d877574c16a4.png?x-oss-process=image/sharpen,200"/>可取代化合物中的<img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/4f898402488747e78990d051f8059d0b.png?x-oss-process=image/sharpen,200"/>，但氨的摩尔质量不变。用过量的<img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/30ebbd2d15b8441ca0327cfbe1f774d7.png?x-oss-process=image/sharpen,200"/>溶液处理该溶液，每摩尔配合物可得1 mol AgCl沉淀，这种化合物应是（）