Explain the difference between passive transport and active transport

Energy is not required in passive transport, and in active transport energy is required.
In active transport, the molecules move against the concentration gradient that is from low to high concentration.
In passive transport, the molecules move with the concentration gradient thatis from high to low concentration.

7is b8 is d9 is c10 is a11 is d

Reaction type : double replacement hcl + lioh = h2o + licl