Answer: D. sugar dissolves when placed in water.
Why:
Chemical properties/changes produce NEW substances.
So when sugar dissolves in water, it breaks down, but NOT to a chemical level that separates its elements. Therefore, it would still be sugar and will not create a new compound/element.
This results in the conclusion that when sugar dissolves in water, it is a physical property, NOT chemical.
Answer:
Concentration of acetic acid=2.3mol/L
Explanation:
Write the balanced chemical reacion:
N1 and N2 normality of CH3COOH and NaOH respectively;
V1 and V2 volume of CH3COOH and NaOH respectively and they are taken upto end point of titration;
we have given molarity but we need normality;
but in case of NaOH and CH3COOH n-factor is 1 for each.
hence
normality=molarity;
Concentration of acetic acid=2.3mol/L
Answer:
They are concentrated between atomic numbers 84 and 118 on the periodic table.
Answer:
Use pOH = -log₁₀ [OH-]
Explanation:
pOH can be calculated from the concentration of hydroxide ions using the formular below:
pOH = -log₁₀ [OH-]
The pOH is the negative logarithm of the hydroxide ion concentration.
