Phenolphthalein indicator indicates the pH of the solution. This indicator is used when the solution is colorless. When added to a solution which is basic in nature, the solution changes color form colorless to pink.
Thus, the correct answer is that the given solution is basic in nature.
The molar concentration of the potassium hydroxide solution was 0.815 mol/L.
<em>Balanced equation</em>: 2KOH + H_2SO_4 → K_2SO_4 + 2H_2O
<em>Moles of H_2SO_4</em>:
15.1 mL H_2SO_4 × (1.50 mmol H_2SO_4 /1 mL H_2SO_4)
= 22.65 mmol H_2SO_4
<em>Moles of KOH</em>: 22.65 mmol H_2SO_4× (2 mmol KOH/2 mmol H_2SO_4)
= 45.30 mmol KOH
<em>Concentration of KOH</em>: c= "moles"/"litres" = 45.30 mmol/55.6 mL
= 0.815 mol/L
Salutations!
<span>In a laboratory experiment, John uses a mesh to separate soil particles from water. Which technique of separation is he using?
The technique that John is using is the filtration technique. Filtration is a technique to separate the solid which is insoluble from the liquid. For instance: Sand and water, sand is insoluble, thus it stays in the filter paper, while the water proceeds through the filter paper.
Hope I helped :D</span>
When neutron numbers are changed an ISOTOPE of the element is formed...
the atom becomes an ISOTOPE
Answer:
Hey mate....
Explanation:
This is ur answer.....
<em>A species considered to be facing a very high risk of extinction in the wild.</em>
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