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</div><h2>HL Paper 1</h2><div class="question">
<p>At which temperature, in K, assuming constant pressure, is the volume of a fixed mass of gas at 127 °C doubled?</p>
<p>A. 200 K</p>
<p>B. 254 K</p>
<p>C. 400 K</p>
<p>D. 800 K</p>
</div>
<br><hr><br><div class="question">
<p class="p1">\({\text{300 c}}{{\text{m}}^{\text{3}}}\) of water is added to a solution of \({\text{200 c}}{{\text{m}}^{\text{3}}}\) of \({\text{0.5 mol}}\,{\text{d}}{{\text{m}}^{ - 3}}\) sodium chloride. What is the concentration of sodium chloride in the new solution?</p>
<p class="p1">A. <span class="Apple-converted-space"> </span>\({\text{0.05 mol}}\,{\text{d}}{{\text{m}}^{ - 3}}\)</p>
<p class="p1">B. <span class="Apple-converted-space"> </span>\({\text{0.1 mol}}\,{\text{d}}{{\text{m}}^{ - 3}}\)</p>
<p class="p1">C. <span class="Apple-converted-space"> </span>\({\text{0.2 mol}}\,{\text{d}}{{\text{m}}^{ - 3}}\)</p>
<p class="p1">D. <span class="Apple-converted-space"> </span>\({\text{0.3 mol}}\,{\text{d}}{{\text{m}}^{ - 3}}\)</p>
</div>
<br><hr><br><div class="question">
<p class="p1">Four identical containers under the same conditions are filled with gases as shown below. Which container and contents will have the highest mass?</p>
<p class="p1"><img src="images/Schermafbeelding_2016-11-02_om_12.02.21.png" alt="N11/4/CHEMI/HPM/ENG/TZ0/03"></p>
</div>
<br><hr><br><div class="question">
<p>What is the pressure, in Pa, inside a 1.0 m<sup>3</sup> cylinder containing 10 kg of H<sub>2</sub> (g) at 25 ºC?</p>
<p><em>R</em> = 8.31 J K<sup>–1</sup> mol<sup>–1</sup>; <em>pV</em> = <em>nRT</em></p>
<p>A. \(\frac{{1 \times {{10}^4} \times 8.31 \times 25}}{{1.0 \times {{10}^3}}}\)</p>
<p>B. \(\frac{{5 \times {{10}^2} \times 8.31 \times 298}}{{1.0}}\)</p>
<p>C. \(\frac{{1 \times 8.31 \times 25}}{{1.0 \times {{10}^3}}}\)</p>
<p>D. \(\frac{{5 \times {{10}^3} \times 8.31 \times 298}}{{1.0}}\)</p>
</div>
<br><hr><br><div class="question">
<p>A compound with <em>M</em><sub>r</sub> = 102 contains 58.8 % carbon, 9.80 % hydrogen and 31 % oxygen by mass.<br>What is its molecular formula?</p>
<p><em>A</em><sub>r</sub>: C = 12.0; H = 1.0; O = 16.0</p>
<p>A. C<sub>2</sub>H<sub>14</sub>O<sub>4</sub></p>
<p>B. C<sub>3</sub>H<sub>4</sub>O<sub>4</sub></p>
<p>C. C<sub>5</sub>H<sub>10</sub>O<sub>2</sub></p>
<p>D. C<sub>6</sub>H<sub>14</sub>O</p>
</div>
<br><hr><br><div class="question">
<p>Which solution neutralizes 50.0 cm<sup>3</sup> of 0.120 mol dm<sup>–3</sup> NaOH (aq)?</p>
<p>A. 12.5 cm<sup>3</sup> of 0.080 mol dm<sup>–3</sup> H<sub>3</sub>PO<sub>4</sub></p>
<p>B. 25.0 cm<sup>3</sup> of 0.120 mol dm<sup>–3</sup> CH<sub>3</sub>COOH</p>
<p>C. 25.0 cm<sup>3</sup> of 0.120 mol dm<sup>–3</sup> H<sub>2</sub>SO<sub>4</sub></p>
<p>D. 50.0 cm<sup>3</sup> of 0.060 mol dm<sup>–3</sup> HNO<sub>3</sub></p>
</div>
<br><hr><br><div class="question">
<p class="p1">What mass, in g, of hydrogen is formed when 3 mol of aluminium react with excess hydrochloric acid according to the following equation?</p>
<p class="p1">\[{\text{2Al(s)}} + {\text{6HCl(aq)}} \to {\text{2AlC}}{{\text{l}}_{\text{3}}}{\text{(aq)}} + {\text{3}}{{\text{H}}_{\text{2}}}{\text{(g)}}\]</p>
<p class="p1">A. <span class="Apple-converted-space"> </span>3.0</p>
<p class="p1">B. <span class="Apple-converted-space"> </span>4.5</p>
<p class="p1">C. <span class="Apple-converted-space"> </span>6.0</p>
<p class="p1">D. <span class="Apple-converted-space"> </span>9.0</p>
</div>
<br><hr><br><div class="question">
<p class="p1">Which coefficients would balance this equation?</p>
<p class="p1" style="text-align: center;"><em>__ </em>\({\text{Mn}}{{\text{O}}_2} + \) <em>__ </em>\({\text{HCl}} \to \) <em>__ </em>\({\text{MnC}}{{\text{l}}_2} + \) <em>__ </em>\({\text{C}}{{\text{l}}_2} + \) <em>__ </em>\({{\text{H}}_2}{\text{O}}\)</p>
<p class="p1"><img src="images/Schermafbeelding_2016-09-30_om_12.28.01.png" alt="N09/4/CHEMI/HPM/ENG/TZ0/01"></p>
</div>
<br><hr><br><div class="question">
<p>4.0 g of solid sodium hydroxide is added to \({\text{0.10 d}}{{\text{m}}^{\text{3}}}\) of \({\text{1.0 mol d}}{{\text{m}}^{ - 3}}\) aqueous sulfuric acid.<br>\[{\text{2NaOH(s) + }}{{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}{\text{(aq) }} \to {\text{ N}}{{\text{a}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}{\text{(aq) + 2}}{{\text{H}}_{\text{2}}}{\text{O(l)}}\]<br>Which statement is correct?</p>
<p class="p1">A. <span class="Apple-converted-space"> </span>Neither reactant is in excess.</p>
<p class="p1">B. <span class="Apple-converted-space"> </span>0.10 mol \({\text{N}}{{\text{a}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}\) is formed.</p>
<p class="p1">C. <span class="Apple-converted-space"> </span>Excess \({{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}\) remains in solution.</p>
<p class="p1">D. <span class="Apple-converted-space"> </span>Excess NaOH remains in solution.</p>
</div>
<br><hr><br><div class="question">
<p>What are the coefficients of \({{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}{\text{(aq)}}\) and \({{\text{H}}_{\text{3}}}{\text{P}}{{\text{O}}_{\text{4}}}{\text{(aq)}}\) when the following equation is balanced using the smallest possible whole numbers?</p>
<p style="text-align: center;">___ \({\text{C}}{{\text{a}}_3}{{\text{(P}}{{\text{O}}_4}{\text{)}}_2}{\text{(s)}} + \) ___ \({{\text{H}}_2}{\text{S}}{{\text{O}}_4}{\text{(aq)}} \to \) ___ \({\text{CaS}}{{\text{O}}_3}{\text{(s)}} + \) ___ \({{\text{H}}_3}{\text{P}}{{\text{O}}_4}{\text{(aq)}}\)</p>
<p style="text-align: left;"><img src="images/Schermafbeelding_2016-08-24_om_12.06.21.png" alt="N13/4/CHEMI/HPM/ENG/TZ0/02"></p>
</div>
<br><hr><br><div class="question">
<p class="p1">What volume of carbon dioxide, in dm<span class="s1">\(^3\) </span>under standard conditions, is formed when 7.00 g of ethene \(({{\text{C}}_2}{{\text{H}}_4}{\text{, }}{M_{\text{r}}} = 28.1)\) undergoes complete combustion?</p>
<p class="p1">A. <span class="Apple-converted-space"> </span>\(\frac{{22{\text{.}}4 \times 28{\text{.}}1}}{{7{\text{.}}00}}\)</p>
<p class="p1">B. <span class="Apple-converted-space"> </span>\(\frac{{22{\text{.}}4 \times 7{\text{.}}00}}{{28{\text{.}}1}}\)</p>
<p class="p1">C. <span class="Apple-converted-space"> </span>\(\frac{{2 \times 22{\text{.}}4 \times 28{\text{.}}1}}{{7{\text{.}}00}}\)</p>
<p class="p1">D. <span class="Apple-converted-space"> </span>\(\frac{{2 \times 22{\text{.}}4 \times 7{\text{.}}00}}{{28{\text{.}}1}}\)</p>
</div>
<br><hr><br><div class="question">
<p>Under which conditions does \({\text{C}}{{\text{H}}_{\text{4}}}\) have the same number of molecules as \({\text{100 c}}{{\text{m}}^{\text{3}}}\) of \({{\text{O}}_{\text{2}}}\) at 27 °C and \(1.0 \times {10^5}{\text{ Pa}}\)?</p>
<p><img src="images/Schermafbeelding_2016-08-11_om_06.26.20.png" alt="M14/4/CHEMI/HPM/ENG/TZ1/02"></p>
</div>
<br><hr><br><div class="question">
<p>7.102 g of <strong>Na<sub>2</sub>SO<sub>4</sub> (<em>M</em> = 142.04 g mol<sup>–1</sup>)</strong> is dissolved in water to prepare \({\text{0.5000 d}}{{\text{m}}^{\text{3}}}\) of solution. What is the concentration of \({\text{N}}{{\text{a}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}\) in \({\text{mol}}\,{\text{d}}{{\text{m}}^{ - 3}}\)?</p>
<p>A. \(2.500 \times {10^{ - 2}}\)</p>
<p>B. \(1.000 \times {10^{ - 1}}\)</p>
<p>C. \(1.000 \times 10\)</p>
<p>D. \({\text{1.000}} \times {\text{1}}{{\text{0}}^{\text{2}}}\)</p>
</div>
<br><hr><br><div class="question">
<p class="p1">Which expression gives the sum of all the coefficients for the general equation for the complete</p>
<p class="p1">combustion of hydrocarbons?</p>
<p class="p1" style="text-align: center;">___ \({{\text{C}}_x}{{\text{H}}_y}{\text{(g)}} + \) ___ \({{\text{O}}_{\text{2}}}{\text{(g)}} \to \) ___ \({\text{C}}{{\text{O}}_{\text{2}}}{\text{(g)}} + \) ___ \({{\text{H}}_{\text{2}}}{\text{O(l)}}\)</p>
<p class="p1">A. <span class="Apple-converted-space"> </span>\(1 + x + \frac{y}{4}\)</p>
<p class="p1">B. <span class="Apple-converted-space"> </span>\(1 + x + \frac{y}{2}\)</p>
<p class="p1">C. <span class="Apple-converted-space"> </span>\(1 + 2x + \frac{{3y}}{4}\)</p>
<p class="p1">D. <span class="Apple-converted-space"> </span>\(1 + 2x + \frac{{3y}}{2}\)</p>
</div>
<br><hr><br><div class="question">
<p class="p1">Which graph represents the relationship between volume and pressure for a fixed mass of gas at constant temperature?</p>
<p><img src="images/Schermafbeelding_2016-09-12_om_12.06.18.png" alt="M13/4/CHEMI/HPM/ENG/TZ1/03"></p>
</div>
<br><hr><br>