Which of the following should be done in order to prepare 0.40 M NaCl starting with 100ml of 0.30M NaCl (mol. wt. of NACl - 58.5)A. Add 0.585 g NaClB. Add 20 ml waterC. Add 0.010ml NaClD. Evaporate 10ml water

Which of the following should be done in order to prepare 0.40 M NaCl

1.	Which of the following should be done in order to prepare 0.40 M NaCl starting with 100ml of 0.30M NaCl (mol. wt. of NACl - 58.5)A. Add 0.585 g NaClB. Add 20 ml waterC. Add 0.010ml NaClD. Evaporate 10ml water
Answer» Correct Answer - A 100 ml. of `0.30 M =(100xx0.3)/(1000)=0.03` mole of NaCl 100 ml of `0.40 M =(100xx0.4)/(1000)=0.04` mole of NaCl Moles of NaCl to be added = 0.04-0.03 =0.01 mole = 0.585 gm

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Which of the following should be done in order to prepare 0.40 M NaCl starting with 100ml of 0.30M NaCl (mol. wt. of NACl - 58.5)A. Add 0.585 g NaClB. Add 20 ml waterC. Add 0.010ml NaClD. Evaporate 10ml water

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