What will be the molarity of a solution that contains 5.85 g of nacl(s) per 500 ml?

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(c) No.of moles of solute / Volume of solution in L,= 5.85/58.5 = 0.1/0.5 = 0.2 mol L,-1

Prasanna | 576 days ago

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Calcium carbonate

What will be the molarity of a solution, which contains 5.85 g of NaCl(s) per 500 mL? (i) 4 mol L-1 (ii) 20 molL-1 (iii) 0.2 molL-1 (iv) 2molL-1

Correct Answer: (iii) 0.2 molL-1

Explanation: The Molarity is defined as the number of moles per volume of the solution in litres.

Given,

Mass = 5.85g

Molar mass = 58.5 g/mol

Volume of the solution = 0.5 L

So,

Number of moles = mass/molar mass

Number of moles =5.85/58.5

Number of moles =0.1 mol

Hence,

Molarity = 0.1/0.5

Molarity = 0.2mol/L

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What will be the molarity of a solution, which contains 5.85 g of NaCl s per 500 mL ?a 4 mol L 1b 20 mol L 1c 0.2 mol L 1d 2 mol L 1