【简答题】丙酸钠与盐酸的反应 C 2 H 5 COONa+HCl C 2 H 5 COOH+NaCl 为2级可逆反应(对丙酸钠及盐酸均为1级),在实验室中用间歇反应器于50℃等温下进行该反应的实验。反应开始时两反应物的物质的量比为1:1,为了确定反应进行的程度,在不同的反应时间下取出10mL反应液,并用0.515mol/L的NaOH溶液滴定,以确定未反应盐酸浓度。不同反应时间下,NaOH溶液用量如下表所示。...
【简答题】Consider these data on the selling prices ($000) of homes in the city of Warren, Pennsylvania, last year. 1. What is the class interval? 2. How many homes were sold last year? 3. How many homes sold f...