As a base is added to an acidic solution, the H+ ions in solution that make it acidic are slowly neutralized into water (via OH-, the base). As these ions are converted into water the concentration of them decreases, so the pH decreases, as they are directly related.
Hope this helps!
An inter-molecular power is basically an alluring power between neighboring particles. There are three regular sorts of inter-molecular power: lasting dipole-dipole powers, hydrogen bonds and van der Waals' powers.
Answer: the answer is option 3. C
Explanation:
Answer:
<h2>13</h2>
Explanation:
<em>b</em><em>e</em><em> </em><em>c</em><em>r</em><em>i</em><em>t</em><em>i</em><em>c</em><em>a</em><em>l</em><em> </em><em>t</em><em>h</em><em>i</em><em>n</em><em>k</em><em>e</em><em>r</em><em>s</em>
It is an open system.<span>
- Closed
system </span>is a physical system which allows to exchange energy <span>with
the </span>surrounding but not allows to exchange matter. <span>
- Isolated system </span>does not exchange either matter or energy with the external
environment.<span>
- Open system </span>is a type of physical system which allows to exchange both matter <span>and </span>energy with the surroundings.<span>
<span>Hence, Alex's
experimental setup which has an unsealed beaker is an open system.</span></span>
