Match the following. 1 Conversion of solid to liquid state on heating
a. Burning of paper
2. A change that can go back to initial form
b. Heating
3 Balloon rises due to
c. Reversible
Solids expand on
d. Melting
5. A permanent change
e. Gas expansion

Calculate the ph at the equivalence point for the titration of a solution containing 150.0 mg of ethylamine (c2h5nh2) with 0.1000 m hcl solution. the volume of the solution at the equivalence point is 250.0 ml. kb forethylamine is 4.7 × 10−4 .