MPSC Combined 2023 GS Paper 1 — Question 62
The correct answer with a full explanation. Practice this interactively instead →
1.5M H₂SO₄ च्या 10 dm³ द्रावणापासून 1.0N H₂SO₄ चे द्रावण कसे बनवाल ? How is 1.0N H₂SO₄ solution is prepared from 10 dm³ of 1.5M H₂SO₄ solution ?
a)दिलेल्या द्रावणात 5 dm³ पाणी घालून / By adding 5 dm³ of water to it
b)दिलेल्या द्रावणात 294 ग्रॅम H₂SO₄ घालून / By adding 294 g of H₂SO₄ to it
c)दिलेल्या द्रावणात 20 dm³ पाणी घालून / By adding 20 dm³ of water to it✓ Correct
d)दिलेल्या द्रावणात 174 ग्रॅम H₂SO₄ घालून / By adding 174 g of H₂SO₄ to it
Normality (N) = Molarity (M) x n-factor. For H2SO4, n-factor is 2, so 1.5M H2SO4 is 3.0N. Using dilution formula N1V1 = N2V2 (3.0 x 10 = 1.0 x V2), the final volume V2 must be 30 dm³. Since we already have 10 dm³, we need to add 20 dm³ of water.