Calculate molarity of solution containing 142gm is 5 litres of water. (molecular of Na and Cl is 23 and 35.5 respectively)
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Answer:
Molarity = 0.486M
Explanation:
molecular mass of NaCl - 23 + 35.5 = 58.5
Molarity = no of moles / volume of solution(in L) = n / V
no of moles = given mass / molecular mass = 142 / 58.5 = 2.43
Molarity = n / V = 2.43 / 5
Molarity = 0.486M
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