Which reagent would you choose to convert ethyl butanoate to 1-butanol?

We can choose reducing agent to convert ethyl butanoate to 1-butanol. LiAlH4 is the reducing agent that can convert ethyl butanoate to 1-butanol. The reaction is shown as below in the attachment:

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.