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<h2>HL Paper 1</h2><div class="question">
<p>The enthalpy change for the dissolution of NH<sub>4</sub>NO<sub>3</sub> is +26 kJ mol<sup>–1</sup> at 25 °C. Which statement about this reaction is correct?</p>
<p>A. The reaction is exothermic and the solubility decreases at higher temperature.</p>
<p>B. The reaction is exothermic and the solubility increases at higher temperature.</p>
<p>C. The reaction is endothermic and the solubility decreases at higher temperature.</p>
<p>D. The reaction is endothermic and the solubility increases at higher temperature.</p>
</div>
<h2 style="margin-top: 1em">Markscheme</h2>
<div class="question">
<p>D</p>
</div>
<h2 style="margin-top: 1em">Examiners report</h2>
<div class="question">
[N/A]
</div>
<br><hr><br><div class="question">
<p>Sulfur dioxide reacts with oxygen to form sulfur trioxide.</p>
<p style="text-align:center;">2SO<sub>2</sub> (g) + O<sub>2</sub> (g) <math xmlns="http://www.w3.org/1998/Math/MathML" class="wrs_chemistry"><mo>⇌</mo></math> 2SO<sub>3</sub> (g) Δ<em>H</em> = −197 kJ</p>
<p>Which change increases the value of <em>K</em><sub>c</sub>?</p>
<p>A. increasing the temperature</p>
<p>B. decreasing the temperature</p>
<p>C. decreasing [SO<sub>2</sub> (g)]</p>
<p>D. decreasing [SO<sub>3</sub> (g)]</p>
</div>
<h2 style="margin-top: 1em">Markscheme</h2>
<div class="question">
<p>B</p>
</div>
<h2 style="margin-top: 1em">Examiners report</h2>
<div class="question">
[N/A]
</div>
<br><hr><br><div class="question">
<p>What is the effect of increasing the temperature in this reaction?</p>
<p style="text-align: center;">CO<sub>2</sub>(g) + H<sub>2</sub>O(l) <span class="mjpage"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext=" \rightleftharpoons ">
<mo stretchy="false">⇌</mo>
</math></span> H<sup>+</sup>(aq) + HCO<sub>3</sub><sup>−</sup>(aq) Δ<em>H </em>< 0</p>
<p>A. The pH will decrease.</p>
<p>B. The pH will increase.</p>
<p>C. CO<sub>2</sub> pressure will decrease.</p>
<p>D. The equilibrium position will shift to the right.</p>
</div>
<h2 style="margin-top: 1em">Markscheme</h2>
<div class="question">
<p>B</p>
</div>
<h2 style="margin-top: 1em">Examiners report</h2>
<div class="question">
[N/A]
</div>
<br><hr><br><div class="question">
<p>What occurs when the pressure on the given equilibrium is increased at constant temperature?</p>
<p style="text-align: center;">N<sub>2</sub>(g) + O<sub>2</sub>(g) <span class="mjpage"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext=" \rightleftharpoons ">
<mo stretchy="false">⇌</mo>
</math></span> 2NO(g) Δ<em>H </em>= +180 kJ</p>
<p>A. <em>K</em><sub>c</sub> increases and the position of equilibrium moves to the right.</p>
<p>B. <em>K</em><sub>c</sub> stays the same and the position of equilibrium is unchanged.</p>
<p>C. <em>K</em><sub>c</sub> stays the same and the position of equilibrium moves to the left.</p>
<p>D. <em>K</em><sub>c</sub> decreases and the position of equilibrium moves to the left.</p>
</div>
<h2 style="margin-top: 1em">Markscheme</h2>
<div class="question">
<p>B</p>
</div>
<h2 style="margin-top: 1em">Examiners report</h2>
<div class="question">
[N/A]
</div>
<br><hr><br><div class="question">
<p>What is correct for pure hot water?<br><br></p>
<p><img 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"></p>
</div>
<h2 style="margin-top: 1em">Markscheme</h2>
<div class="question">
<p>B</p>
</div>
<h2 style="margin-top: 1em">Examiners report</h2>
<div class="question">
[N/A]
</div>
<br><hr><br><div class="question">
<p>A reversible reaction has a reaction quotient, <em>Q</em>, of 4.5 and equilibrium constant, <em>K</em><sub>c</sub>, of 6.2.</p>
<p style="text-align:center;">2A (g) <math xmlns="http://www.w3.org/1998/Math/MathML" class="wrs_chemistry"><mo>⇌</mo></math> A<sub>2 </sub>(g)</p>
<p>Which statement describes the reaction at this time?</p>
<p><br>A. The system has reached equilibrium.</p>
<p>B. The rate of the forward reaction is greater than the rate of the reverse reaction.</p>
<p>C. The concentration of reactant is greater than the concentration of product.</p>
<p>D. At equilibrium, the concentration of reactant is greater than the concentration of product.</p>
</div>
<h2 style="margin-top: 1em">Markscheme</h2>
<div class="question">
<p>B</p>
</div>
<h2 style="margin-top: 1em">Examiners report</h2>
<div class="question">
[N/A]
</div>
<br><hr><br><div class="question">
<p>Which variable affects the equilibrium constant, <em>K</em><sub>c</sub>?</p>
<p>A. Atmospheric pressure</p>
<p>B. Catalyst</p>
<p>C. Concentration of reactants</p>
<p>D. Temperature</p>
</div>
<h2 style="margin-top: 1em">Markscheme</h2>
<div class="question">
<p>D</p>
</div>
<h2 style="margin-top: 1em">Examiners report</h2>
<div class="question">
[N/A]
</div>
<br><hr><br>