Answer:
Synthetic Method: Acids are prepared by direct combinaion of elements
Equation: H2+C1-------> 2HC1
By Dissolving acidic oxides into water: Some oxides dissolve in water to give acids
Equation: SO3+H2O-------> H2SO4
By the action of an acid on the salt of another acid: An acid having a higher boiling point can react with the salt of an acid of lower boiling point to produce an acid.
Equation:H2SO4 + NaC1-------->NaHSO4 + HC1
True. Omniscient narrator tells the thoughts of all characters.
I think that a big part of the suspense in "The Pit and Pendulum" comes from two sources.
The first is the unknown. The reader has no idea why the protagonist has been arrested and sentenced. The opening paragraphs have him in and out of conscious thought all while hallucinating. We don't know who he is or what he has done to deserve punishment. Once he is in his cell, the unknown continues.
