CHEMISTRY

JAMB 2007 - Question 50

Chemistry 2007 JAMB Past Questions - Question 50: What weight of NaCL is needed to make 2.0dm-³ of a 1.5M solution?.

Choose the correct answers from the options given.
What weight of NaCL is needed to make 2.0dm-³ of a 1.5M solution?.
A:
B:
C:
D:
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Correct Answer

B

Explanation

molar mass of NaCL = 58.solution 5g, 1.0M solution of NaCL therefore 1.0M solution of NaCL will contain 58.5 x 15; therefore 2.0 dm³of 1.5M solution will contain 2x 87.75g175.5g of Nacl.175.32 grams of NaCl is needed to make 2.0dm-³ of a 1.5M solution.

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