Will the same result be obtained if `CaCO_3(s)` is heated in an open vessel and in a closed vessel separately?

When NH_4SCN is added to the aquous solution of FeCl_3 the solution turns red but with addition of NH_4CI fedds the red Coluration. Explain. Shall it give same result if CaCO_3 is heated in a open and closed Container separately?

What is a reversible reaction? What is rate of a reaction? Would you get the same result during heating of CaCO_3 separately in an open container and a closed container? Give reason.

What happens when (1) H_(2)SO_(4) is kept in an open vessel and (2) H_(2)SO_(4) is kept in a closed vessel ?

Classify as open, closed or isolated system: (1) A cup of coffee placed on a table (2) Water in a beaker is boiled by heating (3) Lead nitrate is heated in a test tube (4) Solid NH_(4)Cl is heated in a closed vessel (5) Substances present in a soda-water bottle (6) Mercury enclosed in the thermometer.

Will three be any difference in the amount of products if the reaction between steam and red hot iron is carried out separately in a closed and in an open vessel?

The apparent coefficient of expansion of a liquid when heated in a copper vessel is C and when heated in a silver vessel is S. If A is the linear coefficient of expansion of copper, then show that the linear coefficient of expansion of silver is (C+3A-S)/3 .

Why is the equilibrium established in the evaporation of a liquid in a closed vessel at constant temperature called dynamic equilibrium?

One kg of graphite is burnt in a closed vessel. The same amount of graphite is burnt in an oepn vessel. Will the heat evolved in the two cases be the same ? If not, in which case it would be greater?