Question

4 grams of naoh dissolved in 250ml of the solution. calculate molarity

Answer 1

Answer:

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Explanation:

MOLARITY = NO OF MOLES / VOLUME OF SOLUTION IN LITRES

SO HERE NO OF MOLES =  MOLECULAR MASS / MOLAR MASS

NO OF MOLES =  4 / 40 = 0.1

NOW VOLUME IS 250 ML SO IN LITRES IT WILL BE 250 / 1000 = 0.25L

NOW APPLYING FORMULA

0.1 / 0.25 = 0.4M

SO YOUR FINAL ANSWER WILL BE 0.4M