When `Fe_(S)` is dissovled in aqueous hydrochloric acid in a closed vessel the work done is __________

If the above system is an open vessel the work done is

When dilute hydrochloric acid is added to iron fillings

At 300 K, 4 gm calcium is dissolved in hydrochloric acid in an open vessel at the atmoshphere pressure 0.821 atm. Calculate work done by the system.

At 300 K, 4 gm calcium is dissolved in hydrochloric acid in an open vessel at the atmoshphere pressure 0.821 atm. Calculate work done by the system.

When mango is placed in dilute aqueous solution of hydrochloric acid, it?

When mango is placed in dilute aqueous solution of hydrochloric acid, it?