Question

8.
Arun has prepared 0.01% (by mass) solution of
sodium chloride in water. Which of the following
correctly represents the composition of the solutions?
(a) 1.00 g of NaCl + 100 g of water
(b) 0.11 g of NaCl + 100 g of water
(c) 0,01 g of NaCl + 99.99 g of water
(d) 0.10 g of NaCl + 99.90 g of water​

Answer 1

Answer:

Hey mate your answer is option D.

Your solution is given in the attachment.

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Answer 2

Answer:

The correct option is (C)

Explanation:

By definition,  

            m/m%=(Mass of solute/Mass of solution)*100

(a) m/m%= 1.00/1.0+100 *100% =  1/101 *100 = 100/101= 0.99%

(b) m/m%=0.11/100+0.11 * 100% = 11/10011*100 = 1100/10011=0.1099%

(c) m/m%=0.01/0.01+99.99*100%  = 0.01/100.00*100=100/10000=1/100=0.01%