The diagram illustrates the energy changes of a set of reactions.
AH=-134 kJ mol-1
R
S
1
AH=-75 kJ mol-1
T
U
AH +92 J mol¹
Which of the following statement(s) is/are correct?
1 The enthalpy change for the transformation UR is +42 kJ mol-1.
2 The enthalpy change for the transformation TS is endothermic.
3 The enthalpy change for the transformation RT is -33 kJ mol-1.
Select one:
O 1, 2 and 3
Only 1 and 2
O Only 2 and 3
O Only 1
HELP