Answer:
When the solution (with phenolphthalein) changes to colorless
Explanation:
When titrating with HCl is common to add phenolphthalein as an acid-base indicator.
Phenolphthalein is pink or fucsia when added into a basic solution. On the other hand when it is in acid solutions, is colorless.
So, when titrating, the NaOH solution will be initialy pink due to the phenolphthalein and when reaching the equivalence point, that color will fade out into colorless. This is how you know you hace reached the equivalent point.
Answer:
Your lungs are part of the respiratory system.
Explanation:
A group of organs and tissues that work together to help you breathe.The respiratory system's main job is to move fresh air into your body while removing waste gases.
Was this helpful?
If so let me know and please mark me brainiest.
<span>The correct option is C.i.e. AlCl3
Given:
The valence of aluminum is +3, and the valence of chlorine is –1. Thus, 3 chlorine atoms each of (-1 charge )combine to make the charge balance because of Al (3+). Thus, 1 atom of Aluminum (Al) binds with three atoms of Chlorine (Cl).Thus, the net foromula becomes AlCl3</span>
Answer:
Explanation:
1 = A
Sublimation is the process where by a sample is heated to pass through solid phase to gaseous phase without the intermittent liquid phase. Example of substance that sublime is camphor.
2 = D
Decantantion
5 = F
Filtration is the process a liquid from solid using a porous material. This technique requires a set up and a good porous material eg filter paper.
6 = B
This technique is to separate a mixture of solids by converting them from solid phase to gaseous phase since they sublime.
3 = deposition.
The answer isn't in the option but deposition is the process of substance in gaseous phase to change into solid state without passing through liquid phase. Deposition is the opposite of sublimation.
4 = E
MgCl₂(aq) + 2LiOH(aq) = Mg(OH)₂(s) + 2LiCl(aq)
Mg²⁺ + 2Cl⁻ + 2Li⁺ + 2OH⁻ = Mg(OH)₂ + 2Li⁺ + 2Cl⁻
Mg²⁺ + 2OH⁻ = Mg(OH)₂ <span>the net ionic equation</span>
