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Molarity

Class 12 Chemistry के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

ChemistryA solution contains 0.010 mol of solute in 1.00 L of solution. If its van’t Hoff factor is i = 2.0, what effective concentration should be used to calculate its osmotic pressure at 300 K?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Easy ChemistryA solution contains 0.01 mol of a non-dissociated solute in 500 mL of solution. What is its osmotic pressure at 300 K?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13Medium ChemistryA solution shows an osmotic pressure of 0.615 atm at 25 °C. If R = 0.082 L atm mol⁻¹ K⁻¹, what is the approximate molarity of the non-dissociated solute?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryWhich option gives the correct concentration unit for calculating the stated colligative property?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 13Medium ChemistryWhy is molality often preferred over molarity in colligative property calculations?Class 12Chapter 01: Solutions5: Colligative PropertiesLevel 14Medium ChemistryWhy can molarity be affected by a change in temperature?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 11Easy ChemistryA 1.5 mol L−1 solution has density 1.10 g mL−1 and molar mass of solute is 100 g mol−1. What is the approximate mass percentage of solute?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 9Hard ChemistryIn what volume ratio should 0.5 mol L−1 and 1.5 mol L−1 solutions of the same solute be mixed to obtain 1.0 mol L−1 solution?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 7Medium ChemistryFrom 1 L of 0.2 mol L−1 solution, 100 mL is removed and replaced by the same volume of water. What is the new molarity?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 9Hard ChemistryIn 250 mL of 0.05 mol L−1 solution, mass of solute is 1.25 g. What is the molar mass of the solute?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 7Medium ChemistryWhat is the molarity of a 2 percent mass by volume solution if molar mass of solute is 40 g mol−1?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 6Easy Chemistry100 mL of 0.5 mol L−1 solution is diluted to 500 mL. How many moles of solute are present in 50 mL of the final solution?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 8Medium Chemistry20 mL is taken out from 100 mL of 0.5 mol L−1 solution and diluted again to 100 mL with water. What is the new molarity?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 7Medium Chemistry200 mL of 0.1 mol L−1 solution and 300 mL of 0.3 mol L−1 solution of the same solute are mixed. What is the final molarity?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 7Medium ChemistryA 30 percent by mass nitric acid solution has density 1.18 g mL−1. Molar mass of nitric acid is 63 g mol−1. What is its approximate molarity?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 8Medium ChemistryHow much water should be added to 200 mL of 0.2 mol L−1 solution to make its molarity 0.05 mol L−1?Class 12Chapter 01: Solutions6: Molar Mass DeterminationLevel 7Medium ChemistryIn what volume ratio should 1 mol L⁻¹ and 4 mol L⁻¹ solutions of the same solute be mixed to obtain a 2 mol L⁻¹ solution?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 7Medium Chemistry50 mL of 5 mol L−1 acid is mixed with 100 mL of 2 mol L−1 acid. Assuming final volume is 150 mL, what is the final molarity?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 7Medium ChemistryA 0.5 mol L⁻¹ glucose solution has density 1.04 g mL⁻¹. Molar mass of glucose is 180 g mol⁻¹. What is its approximate molality?Class 12Chapter 01: Solutions4: Vapour PressureLevel 10Hard ChemistryA 10 percent by mass sodium chloride solution has density 1.07 g mL⁻¹. Molar mass of sodium chloride is 58.5 g mol⁻¹. What is its approximate molarity?Class 12Chapter 01: Solutions2: Concentration MetricsLevel 8Medium