You have a freshly prepared 0.1 M solution of glucose in water. Each liter of this solution contains how many glucose molecules? (1) 6.02 * 10 ^ 23 (3) 6.02 * 10 ^ 24 (2) 3.01 * 10 ^ 23 (4) 6.02 * 10 ^ 22 Let’s break down the problem: Given: So, a 0.1 … Read more
Which of the following is not a colligative property. which arises in systems when there is addition of solute? (1) Lowering of vapour pressure (2) Lowering of melting point (3) Lowering of boiling point (4) Increase of osmotic pressure Colligative Properties: These properties depend only on the number of solute particles in a solution, not … Read more
Within the aqueous environment of an animal cell, sugars are stored as polymers rather than as monomers. If the sugars were stored as monomers instead of polymers, which of the following properties would be LEAST affected? (1) Freezing point (3) Viscosity (2) Osmotic pressure (4) pH et’s think about the properties of monomers versus polymers … Read more
Osmotic pressure does not depend on (1) Temperature (3) Molecular weight (2) Degree of ionization (4) Molar concentration Osmotic Pressure: Osmotic pressure is the pressure required to stop the flow of solvent through a semi-permeable membrane separating two solutions of different concentrations. It depends on the concentration of solute particles in the solution. Formula for … Read more
Which of the following will have maximum effect on lowering in vapour pressure if added in equimolar concentration?(1) Sucrose(3) NaCl(2) Glucose(4) CaCl₂ What is Vapor Pressure Lowering? When you add a solute (like sugar or salt) to a solvent (like water), it lowers the vapor pressure of the solvent. This is called lowering of vapor … Read more
If you mix equal volumes of pH 4.0 and pH 6.0 solutions, what will be the approximate pH of the final solution? (1)7.0 (3)5.0 (2) 3.7 (4) 4.3
Tris hydroxyethyl aminoethane (THAE) has a pk, of 8.4. The buffering capacity of a buffer made with this compound will be greatest at which pH? (1) pH 9.4 ffer (2) pH 7.4 (3) pH 8.4 (4) Both at pH 7.4 and 9.4 Concept: Buffering Capacity and pKa The buffering capacity of a buffer is highest … Read more
What is the concentration of OH in a solution with a H’ concentration of 1.3 * 10 ^ – 4 M? (1) 7.7 * 10 ^ – 10 * M (2) 7.7 * 10 ^ – 9 * M (3) 7.7 * 10 ^ – 11 * M (4) 7.7 * 10 ^ – 12 … Read more
If pH of solution of NaOH is 12.0 the pH of H2 SO4 solution of same molarity will be (1) 2.0 (3) 1.7 (2) 12.0 (4) 10.0387
A 10 N HCI solution was diluted 10-fold with water and the pH of the diluted solution was measured with a pH meter after calibration using standard solutions. Given that the activity coefficient for diluted HCI was 0.01, the pH of the solution would be (1) 0 (3) 2 (2) 1 (4) 2.5