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একটি দ্রবণের pH হলো 6। ঐ দ্রবণে আরো HCl দ্রবণ যোগ করে দ্রবণের pH 3 করা হলো। শেষ দ্রবণে <mjx-container class="MathJax CtxtMenu_Attached_0" jax="CHTML" role="presentation" tabindex="0" ctxtmenu_counter="46" style="font-size: 114.2%; position: relative;"><mjx-math class="MJX-TEX" aria-hidden="true"><mjx-msup><mjx-mi class="mjx-i"><mjx-c class="mjx-c1D43B TEX-I"></mjx-c></mjx-mi><mjx-script style="vertical-align: 0.363em; margin-left: 0.053em;"><mjx-mo class="mjx-n" size="s"><mjx-c class="mjx-c2B"></mjx-c></mjx-mo></mjx-script></mjx-msup></mjx-math><mjx-assistive-mml role="presentation" unselectable="on" display="inline"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>H</mi><mo>+</mo></msup></math></mjx-assistive-mml></mjx-container> আয়নের মোলার ঘনমাত্রা বৃদ্ধি ঘটেছে-

1. A <mjx-container class="MathJax CtxtMenu_Attached_0" jax="CHTML" role="presentation" tabindex="0" ctxtmenu_counter="47" style="font-size: 114.2%; position: relative;"><mjx-math class="MJX-TEX" aria-hidden="true"><mjx-msup><mjx-mn class="mjx-n"><mjx-c class="mjx-c31"></mjx-c><mjx-c class="mjx-c30"></mjx-c></mjx-mn><mjx-script style="vertical-align: 0.393em;"><mjx-mn class="mjx-n" size="s"><mjx-c class="mjx-c33"></mjx-c></mjx-mn></mjx-script></mjx-msup></mjx-math><mjx-assistive-mml role="presentation" unselectable="on" display="inline"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mn>10</mn><mn>3</mn></msup></math></mjx-assistive-mml></mjx-container> times
2. B <mjx-container class="MathJax CtxtMenu_Attached_0" jax="CHTML" role="presentation" tabindex="0" ctxtmenu_counter="48" style="font-size: 114.2%; position: relative;"><mjx-math class="MJX-TEX" aria-hidden="true"><mjx-msup><mjx-mn class="mjx-n"><mjx-c class="mjx-c31"></mjx-c><mjx-c class="mjx-c30"></mjx-c></mjx-mn><mjx-script style="vertical-align: 0.393