The distance between zinc and hydrogen in the activity series is greater than the distance between iron and hydrogen. The further apart the elements are in the activity series, the more energy is released. Determine the relative amount of energy released during the reactions:.Iron is more active than hydrogen, a reaction will occur (bubbles of hydrogen gas form). Zinc is more active than hydrogen, a reaction will occur (bubbles of hydrogen gas form). Zinc is more active than iron which is more active than hydrogen. Determine the relative activity of iron, zinc and hydrogen using the activity series:.In which beaker, A or B, would you expect the greatest temperature increase in the first minute of the experiment? To beaker B the student the adds the same amount of clean zinc. To beaker A the student adds a clean piece of iron. A student pours 100 mL of 0.1 mol L -1 hydrochloric acid into each of two 250 mL beakers labelled A and B.Ī thermometer is suspended in each beaker, and the initial temperature of each acidic solution recorded. Determine the relative activity of copper and hydrogen using the activity series:Ĭopper is not more active than hydrogen so it will not displace hydrogen from acidic solution.A piece of clean copper is placed in a beaker with dilute sulfuric acid. Magnesium (more active) will displace hydrogen (less active) from acidic solution. Determine whether a reaction will occur:.Determine the relative activity of magnesium and hydrogen using the activity series:.A piece of clean magnesium is placed in a beaker with dilute hydrochloric acid. Play the game now! Hydrogen Displacement Reaction ExamplesĪ metal that is more active than hydrogen will displace hydrogen from an acid. (position of hydrogen in the series for comparison)Ĭopper to gold will not displace hydrogen Nickel to lead will displace hydrogen from : Magnesium to iron will displace hydrogen from : non-oxidizing acids (dilute hydrochloric or sulfuric acid).Metal + hot gaseous water → metal hydroxide + hydrogen gas Metal + cold water → metal hydroxide + hydrogen gas Lithium to sodium will displace hydrogen from : If a reaction occurs, a more active metal will react more rapidly than a less active metal.The further apart two elements are in the activity series, the more energy the reaction produces.Įnabling us to predict the relative amount of energy released during a chemical reaction!.A more active element displaces a less active element in a chemical reaction.Įnabling us to make predictions on the probable outcome of a chemical reaction!.(A substance that loses electrons is called a reductant or reducing agent) A more active metal loses electrons more easily than a less active metal.Ī more active metal is a stronger reductant than a less active metal.(Silver, platinum and gold are so unreactive that they are called noble metals (or inactive metals).
Group 1 (alkali) metals and Group 2 (alkaline earth) metals are more active than transition metals.
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