A、ΔrU=0，ΔrH=0，ΔrS>0，ΔrG<0
B、ΔrU<0，ΔrH<0，ΔrS>0，ΔrG<0
C、ΔrU=0，ΔrH>0，ΔrS>0，ΔrG<0
D、ΔrU>0，ΔrH>0，ΔrS=0，ΔrG>0
更多“2mol H<sub>2</sub>和2mol Cl<sub>2</sub>在绝热钢筒内反应生成HCl气体，起始时为常温常压。则：（ ） ”相关的问题
A、2t<sub>1/2sub>=t<sub>1/2sub>’ B、t<sub>1/2sub>=2t<sub>1/2sub>’ C、t<sub>1/2sub>=t<sub>1/2sub>’ D、t<sub>1/2sub>=4t<sub>1/2sub>’
A、2t<sub>1/2sub>=t<sub>1/2sub>’ B、t<sub>1/2sub>=2t<sub>1/2sub>’ C、t<sub>1/2sub>=t<sub>1/2sub>’ D、t<sub>1/2sub>=4t<sub>1/2sub>’
A、操作中注意碘量瓶的水封，避免蒸汽与空气接触 B、加入淀粉指示剂不宜过早 C、提高加入H<sub>2sub>SO<sub>4sub>的浓度由原来的2mol/L提高到5mol/L D、加入KI的量要远过量于K<sub>2sub>Cr<sub>2sub>O<sub>7sub>，使反应完全
A、CH<sub>4sub> B、C<sub>2sub>H<sub>4sub> C、C<sub>2sub>H<sub>2sub> D、C<sub>6sub>H<sub>6sub>
A、△H<sub>1sub>〈△H<sub>2sub>，W<sub>1sub>〉W<sub>2sub> B、△H<sub>1sub>〉△H<sub>2sub>，W<sub>1sub>〈W<sub>2sub> C、△H<sub>1sub>〈△H<sub>2sub>，W<sub>1sub>〈W<sub>2sub> D、△H<sub>1sub>〉△H<sub>2sub>，W<sub>1sub>〉W<sub>2sub>
A、△H<sub>1sub>〉△H<sub>2sub>，W<sub>1sub>〈W<sub>2sub> B、△H<sub>1sub>〈△H<sub>2sub>，W<sub>1sub>〉W<sub>2sub> C、△H<sub>1sub>=△H<sub>2sub>，W<sub>1sub>〈W<sub>2sub> D、△H<sub>1sub>=△H<sub>2sub>，W<sub>1sub>〉W<sub>2sub>
A、CO<sub>2sub>和H<sub>2sub> B、CO<sub>2sub>和H<sub>2sub>O C、CO和H<sub>2sub> D、CO和H<sub>2sub>O
A、H<sub>2sub>→C<sub>2sub>H<sub>4sub>→C<sub>3sub>H<sub>6sub>→C<sub>2sub>H<sub>2sub>→CO B、H<sub>2sub>→CO→C<sub>2sub>H<sub>4sub>→C<sub>3sub>H<sub>6sub>→C<sub>2sub>H<sub>2sub> C、H<sub>2sub>→C<sub>2sub>H<sub>4sub>→C<sub>3sub>H<sub>6sub>→CO→C<sub>2sub>H<sub>2sub> D、CO→H<sub>2sub>→C<sub>2sub>H<sub>4sub>→C<sub>3sub>H<sub>6sub>→C<sub>2sub>H<sub>2sub>
客服
TOP
查看正确答案
