What will happen If the temperature is increased for the following reaction at equilibrium H2 (g) + I2 (g) + HEAT <> 2HI (g) 1. reaction will shift to the the right and the concentration of H2 (g) will decrease
2. reaction will shift to the the right and the concentration of H2 (g) will increase
3. reaction will shift to the the left and the concentration of H2 (g) will decrease
4. reaction will shift to the the left and the concentration of H2(g) will increase

the only liquid elements at standard temperature and pressure are bromine (br) and mercury (hg). although, elements caesium (cs), rubidium (rb), francium (fr) and gallium (ga) become liquid at or just above room temperature.

explanation:

- aluminum and copper chloride.

- the chloride ion to separate the aluminum from the oxygen so that the aluminum can react with the copper ions (and the water molecules).

gas

explanation:

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