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30 ml of KOH is neutralised by 15 ml of H2SO4. How much KOH will be required to neutralise 25 ml of H2SO4?
40 ml
50 ml
60 ml
45 ml
50 ml
To neutralize 30 ml of KOH using 15 ml of H2тАЛSO4тАЛ, we establish a volumetric ratio. Since 15 ml of acid neutralizes 30 ml of base (a 1:2 ratio), 25 ml of acid will neutralize 50 ml of base.
To neutralize 30 ml of KOH using 15 ml of H2тАЛSO4тАЛ, we establish a volumetric ratio. Since 15 ml of acid neutralizes 30 ml of base (a 1:2 ratio), 25 ml of acid will neutralize 50 ml of base.
If you need 2 scoops of sugar for every 1 cup of coffee, and you decide to make 25 cups of coffee, you will logically need 50 scoops of sugar to maintain the same taste profile.
N-V-M: Number of moles or volume scales linearly at constant molarity.
N1тАЛV1тАЛ=N2тАЛV2тАЛ тАФ Law of equivalence for titration
VH2тАЛSO4тАЛтАЛVKOHтАЛтАЛ=1530тАЛ=2 тАФ Volumetric ratio calculation
The neutralization reaction follows the law of equivalence, where the number of equivalents of acid must equal the number of equivalents of base. Assuming constant concentration, the volume of base required is directly proportional to the volume of the acid added. The ratio VbaseтАЛ:VacidтАЛ=30:15=2:1.
Neutralization occurs when H+ ions from the acid react with OHтИТ ions from the base to form water.
The stoichiometric ratio depends on the concentration; here, the ratio of base to acid is constant at 2:1.
This calculation assumes the molarity of both solutions remains consistent throughout.
Quick estimation for titrations
Simplifies stoichiometric calculations without explicit molarity
Does not account for concentration changes
Assumes perfect reaction stoichiometry
Acid-base titration analysis
Industrial effluent neutralization
The constant ratio is 2┬аml┬аKOH/1┬аml┬аH2тАЛSO4тАЛ.
Option A (40 ml) is incorrect because it underestimates the required base by 10 ml.
Option C (60 ml) is incorrect as it represents a doubling of the initial volume without regard to the acid volume.
Option D (45 ml) is a distractor calculation not derived from the 2:1 ratio.
B is correct тАФ Using the established 2:1 volume ratio of KOH to H2тАЛSO4тАЛ, 25 ml of acid requires 50 ml of base.
In competitive exams, always check if the concentrations are mentioned. If not, treat the volumes as proportional based on the provided experimental reference.
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