What is the concentration of a solution with 2.00 moles of solute in 4.00 l of solution?
1 answer:
Explanation:
Molarity is defined as the the number of moles present in a solution divided by volume in liters.
Mathematically, Molarity =
As it is given that number of moles present into the solution are 2.00 moles and volume is 4 liter. Therefore, calculate the molarity of solution as follows.
Molarity =
=
= 0.5 M
Thus, we can conclude that the concentration of given solution is 0.5 M.
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Answer: a) pH of a 0.1 M vinegar solution is 2.9
b) It is an acid as pH is less than 7
Explanation:
pH or pOH is the measure of acidity or alkalinity of a solution.
pH is calculated by taking negative logarithm of hydrogen ion concentration.
Acids have pH ranging from 1 to 6.9, bases have pH ranging from 7.1 to 14 and neutral solutions have pH equal to 7.
As vinegar is a weak acid, its dissociation is represented as;
cM 0 0
So dissociation constant will be:
Give c= 0.1 M
Also
Thus pH of a 0.1 M vinegar solution is 2.9
As pH is less than 7, it is an acid.