Chapter 6, Problem 6.54P

Explain why $\text{HC}\equiv \text{CH}$ is more acidic than ${\text{CH}}_{\text{3}}{\text{CH}}_{\text{3}}$, even though the $\text{C}-\text{H}$ bond in $\text{HC}\equiv \text{CH}$ has a

higher bond dissociation energy than the $\text{C}-\text{H}$ bond in ${\text{CH}}_{\text{3}}{\text{CH}}_{\text{3}}$.