反应2SO2(g) + O2(g) <img width="27" height="16" src="https://www.icve.com.cn/common/js/ueditor/themes/default/images/spacer.gif" word_img="file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/msohtml1/01/clip_image002.gif" style="background:url(https://www.icve.com.cn/common/js/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd"/>2SO3(g)达到平衡时,保持体积不变,加入惰性气体He,使总压力增加一倍则