(1) ∆H > 0, ∆S > 0

(2) ∆H < 0, ∆S < 0

(3) ∆H > 0, ∆S < 0

(4) ∆H < 0, ∆S > 0

(1) Dissolution of NH4Cl in water

(2) Burning of rocket fuel

(3) Sublimation of dry ice

(4) Condensing steam

(1) - 11488 kJ

(2) - 11.488 kJ

(3) - 12 kJ

(4) - 12000 kJ

(1) ΔΗ is positive for exothermic reactions

(2) ∆H is negative for endothermic reactions

(3) The enthalpy of fusion is negative

(4) The heat of neutralization of strong acid with strong base is always the same

(1) ΔΗ is negative

(2) Heat is given to the surroundings

(3) Enthalpy of the reactants is less than that of the products

(4) ΔΕ is negative

(1) 9

(2) 18

(3) 6

(4) 24

(1) RT

(2) 1/√RT

(3) √RT

(4) 1

(1) Temperature

(2) Pressure

(3) Volume

(4) Catalytic agent

(1) 0.1

(2) 1.0

(3) 10

(4) ♾️

(1) 12 atm

(2) 16 atm

(3) 20 atm

(4) 6 atm