Note: M1 = 50.00 ml
V1 = 0.150 M
M2 = 0.100 M
Asked: V2?
Answer: First, first realize the reaction:
NaOH + CH3COOH = Na (+) + CH3COO (-) + H2O
Second, enter all known numbers into the molarity formula:
M = n / V
n = M * V
M1 * V1 = M2 * V2
V2 = M1 * V1 / M2
V2 = 50.00 ml * 0.150 M / 0.100 M
V2 = 75 ml
So, the NaOH needed to neutralize 50.00 ml of a solution of 0.1150 m of acetic acid (ch 3 co) is 75 ml.
In chemistry, molarity (abbreviated M) is one measure of the concentration of the solution. The molarity of a solution expresses the number of moles of a substance per liter of solution. For example, 1.0 liter of solution contains 0.5 mol of compound X, so this solution is called a 0.5 molar (0.5 M) solution. Generally, the concentration of aqueous aqueous solutions is expressed in molar units. The advantage of using molar units is the ease of calculation in stoichiometry because the concentration is expressed in moles (proportional to the actual number of particles). The disadvantage of using this unit is inaccuracy in volume measurement. Also, the volume of a liquid changes with temperature, so the molarity of the solution can change without adding or reducing any substances. Also, in a solution that is not very thin, the molar volume of the substance itself is a function of concentration, so the molarity-concentration relationship is not linear.
A neutralization reaction is a reaction where acids and bases react in aqueous solution to produce salt and water. The liquid sodium chloride that is produced in a reaction is called salt. Salt is an ionic compound consisting of cations from bases and anions from acids. Salt is an ionic compound that is not an acid or a base.
Strong-base Strong Acid Reaction
When the same amount of strong acid such as hydrochloric acid is mixed with a strong base such as sodium hydroxide, the result is a neutral solution. The reaction product does not have the characteristics of either acid or base.
Reactions Involving Weak Acids or Weak Bases
Reactions where at least one component is weak generally do not produce a neutral solution.
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Details
Grade: College
Subject: Chemistry
keywords: molarity
