A.S(s) + O2(g) =SO2(g);H=-kJ/mol |
B.S(g) + O2(g) =SO2(g);H=-kJ/mol |
C.S(s) + O2(g) =SO2(g);H=-(2a-)kJ/mol |
D.S(s) + O2(g) =SO2(g);H=-(b-a)kJ/mol |
A.N2(g)+3H2(g) ="==" 2NH3(1)△H=2(a-b-c)kJ·mol-1 |
B.N2(g)+3H2(g) ="==" 2NH3(g)△H=2(b-a)kJ·mol-1 |
C.N2(g)+H2(g) ===NH3(1)△H=(b+c-a)kJ·mol-1 |
D.N2(g)+H2(g) ===NH3(g)△H=(a+b)kJ·mol-1 |
A.-1648.8KJ/mol | B.-824.4KJ/mol | C.+1648.8KJ/mol | D.-744.7KJ/mol |
© 2017-2019 超级试练试题库,All Rights Reserved.