Chemical Reactivity and Aqua Regia Quiz
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Questions and Answers

Which metal is more reactive, copper or iron, according to the observations in Activity 3.12?

Iron

What is the purpose of sodium being kept immersed in kerosene oil?

To prevent it from reacting with moisture or air

Provide the equations for the reactions of (i) iron with steam and (ii) calcium and potassium with water.

(i) Iron + Steam -> Iron(II) oxide + Hydrogen gas; (ii) Calcium + Water -> Calcium hydroxide + Hydrogen gas, Potassium + Water -> Potassium hydroxide + Hydrogen gas

Explain the concept of displacement reactions in the context of studying the reactivity of metals.

<p>When a more reactive metal displaces a less reactive metal from its solution, it indicates that the more reactive metal is higher in the reactivity series.</p> Signup and view all the answers

How is the reactivity series of metals helpful in understanding the behavior of different metals?

<p>The reactivity series arranges metals in order of decreasing reactivity, which helps predict whether a metal will displace another metal from a solution.</p> Signup and view all the answers

Why are some metals more reactive than others? Provide a brief explanation.

<p>More reactive metals have a greater tendency to lose electrons and form positive ions, making them more likely to undergo displacement reactions.</p> Signup and view all the answers

What is the significance of observing the reaction between copper and iron in Activity 3.12?

<p>The observation of this reaction helps determine which metal, copper or iron, is more reactive based on the displacement reaction.</p> Signup and view all the answers

How can the reactivity series be used to predict the outcomes of displacement reactions?

<p>By referring to the reactivity series, one can determine if a metal will displace another metal from a solution based on their positions in the series.</p> Signup and view all the answers

What is the general trend in reactivity as you move down the reactivity series of metals?

<p>Reactivity generally decreases as you move down the reactivity series of metals, with the most reactive metals at the top and the least reactive at the bottom.</p> Signup and view all the answers

How does the reactivity series help in identifying which metal is more likely to displace another metal in a reaction?

<p>The metal higher in the reactivity series is more likely to displace the metal lower in the series from a solution.</p> Signup and view all the answers

Explain the importance of the reactivity series in the context of studying metal oxides.

<p>The reactivity series helps predict which metals will form more stable oxides and their behavior in reactions involving oxygen.</p> Signup and view all the answers

Why do more reactive metals tend to form more stable metal oxides?

<p>More reactive metals have a stronger tendency to react with oxygen, forming more stable metal oxides compared to less reactive metals.</p> Signup and view all the answers

How does the reactivity series influence the choice of metals for specific applications?

<p>The reactivity series guides the selection of metals based on their reactivity, ensuring the appropriate metal is chosen for a particular purpose.</p> Signup and view all the answers

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