Given the equation representing a system at equilibrium in a sealed, rigid container:
2HI(g) <->H2(g) + I2(g) + energy
Increasing the temperature of the system causes the concentration of
1)HI to increase
2)H2 to increase
3) HI to Remain constant
4) HI to Remain constant

1) HI to increase

Explanation:

Any change in the equilibrium is studied on the basis of Le-Chatelier's principle.This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

As the given reaction is exothermic , on increasing the tempearture, the equilibrium will shift in the direction where decrease in tempearture is taking place.So, the equilibrium will shift in the left direction. i.e. towards reactants. Thus amount of will increase.

Question is incomplete, the complete question is;

Zinc granules on treating with an acid X, form the zinc sulphate (ZnSO4) salt along with the evolution of a gas Y which burns with a pop sound when brought near to a burning candle. Identify the acid X and gas evolved Y.

Answer is;

Acid X is sulfuric acid (H₂SO₄) and the gas evolved Y is hydrogen (H₂).

Explanation:

Acids react with metals to produce a salt and hydrogen. The metal ions replace the hydrogen ions in the acids.  

When Zinc (Zn) granules are treated with sulfuric acid (H₂SO₄), the products are zinc sulfate (ZnSO₄) and hydrogen (H₂).

H₂SO₄ + Zn → ZnSO₄ + H₂

This reaction is a redox reaction, where reduction and oxidation happen at the same time. Zinc atoms are oxidized since they lose electrons (Zn → Zn²⁺ + 2e⁻), and hydrogen ions are reduced since they gain electrons (2H⁺ + 2e⁻ → H₂).  

Hydrogen is a highly flammable gas, which reacts with oxygen molecules to produce water, combined with an explosive release of energy. But a source of energy like a small spark is needed for this reaction to take place since hydrogen does not react with oxygen at room temperature.

The activation energy (energy required for a reaction to proceed) of hydrogen is low, so only a small amount of energy is needed to trigger a reaction with oxygen. When hydrogen is brought near to a burning candle, it reacts with oxygen in the air in a small explosion by producing a squeaky pop sound.

In the question, Zinc granules are treated with an acid X to form zinc sulfate (ZnSO₄) salt along with the evolution of a gas Y which burns with a pop sound when brought near to a burning candle. So, now it is clear that the acid X is sulfuric acid (H₂SO₄) and the gas evolved Y is hydrogen (H₂).