題目列表(包括答案和解析)
下列反應(yīng)中,一定不能自發(fā)進(jìn)行的是
A.2KClO3(s)= 2KCl(s)+ 3O2(g) ΔH = -78.03 kJ·mol-1,ΔS = 494.4 J·mol-1·K-1
B.CO(g)= C(s,石墨)+O2(g) ΔH = 110.5 kJ·mol-1,ΔS = -89.4 J·mol-1·K-1
C.4Fe(OH)2(s)+2H2O(l)+O2(g)= 4Fe(OH)3(s)
ΔH = -444.3 kJ·mol-1,ΔS = -280.1 J·mol-1·K-1
D.NH4HCO3(s) + CH3COOH(aq) = CH3COONH4 (aq) + CO2(g) +H2O(l)
ΔH = 37.30 kJ·mol-1,ΔS = 184.0 J·mol-1·K-1
下列反應(yīng)中,一定不能自發(fā)進(jìn)行的是
A.2KClO3(s)= 2KCl(s)+ 3O2(g) ΔH = -78.03 kJ·mol-1,ΔS = 494.4 J·mol-1·K-1
B.CO(g)= C(s,石墨)+O2(g) ΔH = 110.5 kJ·mol-1,ΔS = -89.4 J·mol-1·K-1
C.4Fe(OH)2(s)+2H2O(l)+O2(g)= 4Fe(OH)3(s)
ΔH = -444.3 kJ·mol-1,ΔS = -280.1 J·mol-1·K-1
D.NH4HCO3(s) + CH3COOH(aq) = CH3COONH4 (aq) + CO2(g) +H2O(l)
ΔH = 37.30 kJ·mol-1,ΔS = 184.0 J·mol-1·K-1
下列反應(yīng)中,一定不能自發(fā)進(jìn)行的是
A.2KClO3(s)=2KCl(s)+ 3O2(g) ΔH = -78.03 kJ·mol-1,ΔS = 494.4 J·mol-1·K-1
B.CO(g)=C(s,石墨)+O2(g) ΔH = 110.5kJ·mol-1,ΔS = -89.4 J·mol-1·K-1
C.4Fe(OH)2(s)+2H2O(l)+O2(g)=4Fe(OH)3(s)
ΔH = -444.3 kJ·mol-1,ΔS = -280.1 J·mol-1·K-1
D.NH4HCO3(s) + CH3COOH(aq) = CH3COONH4(aq) + CO2(g) +H2O(l)
ΔH = 37.30 kJ·mol-1,ΔS = 184.0 J·mol-1·K-1
H2 | O2 | F2 | OH | OF | HF | |
E/(kJ/mol) | 432 | 494 | 155 | 424 | 220 | 566 |
從實驗測得不同物質(zhì)中O—O之間的鍵長和鍵能的數(shù)據(jù)為:
O—O鍵 數(shù)據(jù) | O2 | |||
鍵長/10-12m | 149 | 128 | 121 | 112 |
鍵能/kJ·mol-1 | x | y | z=494 | w=628 |
其中x、y的鍵能數(shù)據(jù)尚未測定,但可根據(jù)規(guī)律性推導(dǎo)鍵能的大小順序為w>z>y>x。該規(guī)律性是( )
A.成鍵時電子數(shù)越多,鍵能越大 B.鍵長越長,鍵能越大
C.成鍵所用的電子數(shù)越少,鍵能越大 D.成鍵時電子對越偏移,鍵能越大
湖北省互聯(lián)網(wǎng)違法和不良信息舉報平臺 | 網(wǎng)上有害信息舉報專區(qū) | 電信詐騙舉報專區(qū) | 涉歷史虛無主義有害信息舉報專區(qū) | 涉企侵權(quán)舉報專區(qū)
違法和不良信息舉報電話:027-86699610 舉報郵箱:58377363@163.com