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calculate the no. of moles and the amount in grams of NaOH in 250 cubic cm. of a 0.100 M NaOH solution?

6 years ago


Answers : (2)


0.1 M solution has 0.1 moles of NaOH in 1 L of solution that is to say 1000 cubic cm.

so 250 cubic cm. solution will have 0.1/4 that is to say .025 moles of NaOH.

Now multiply the number of moles by the Molecular weight of NaOH to get the amoun in grams.

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Rahul- IIT Roorkee

6 years ago

very simple ques... but ok. here is ur sol.

1 cubic cm = 1/1000 litre..... so 250 cubic cm = 250/1000,  "means 0.25 liter. NaOH present"
given sol. of 0.100 M.  therefore total mole present ; 0.100M*0.25= 0.025 ( 1st answer)

2nd answer...  1 mole contain 32 gram NaOH ( 23+8+1 )....  therefore amt of gram of NaOH present ; 0.025*32= calculate urself

6 years ago

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