Question

To calculate the molarity of a solutions when the solute is given in grams and the volume of the solution is given in mililiters,you must first,
a.convert grams to moles ,but leave the volume of solution in milliliters
b.convert volume of solution in milliliters to liters,but leave grams to moles.
c.convert grams to moles ,and convert volume of solution in milliliters to liters.
d.none of the above.​

Answer 1

Answer- The above question is from the chapter 'Some Basic Concepts of Chemistry'.

Molarity: Number of moles of solute present in 1 litre of solution is called molarity.

Unit of Molarity = Molar (M)

•When volume is given in litres,

Molarity = Number of moles of solute ÷ Volume of solution in litres

•When volume is given in millilitres,

Molarity = (Number of moles of solute × 1000) ÷ Volume of solution in ml

•When mass % and density is given,

Molarity = (Mass % × Density × 10) ÷ Molar mass of Solute

Given question: To calculate the molarity of a solutions when the solute is given in grams and the volume of the solution is given in mililiters,you must first,

a. convert grams to moles ,but leave the volume of solution in milliliters

b. convert volume of solution in milliliters to liters,but leave grams to moles.

c. convert grams to moles ,and convert volume of solution in milliliters to liters.

d. none of the above.​

Answer: c. convert grams to moles ,and convert volume of solution in milliliters to liters.