Question

What does upward arrow mark indicates in an equation?​

Answer 1

Answer:

The up arrow being directed towards the top means that the compound or any gas that has been formed is escaped or liberated during a chemical reaction where as down arrow means that the compounds which is formed being insoluble is settled down , which we call in chemistry as precipitates out.

Answer 2

Answer:

An arrow pointing up (as in co2).indicated that are products will form a gas t

hat will bubble out of a solution. An arrow pointing down (as in pbl2) indicates that are products will spontaneously precipitate form the solution