A vessel contains 30 litres of 60% nitric acid. How much water should be added to the vessel so that the concentration of acid becomes

Question

A vessel contains 30 litres of 60% nitric acid. How much water should be added to the vessel
so that the concentration of acid becomes 40%?​

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Hadley 2 months 2021-12-03T08:47:26+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-12-03T08:48:43+00:00

    Answer:

    simple way

    ————–

    focus on the water which has to increase from 30% to 60%

    so total quantity has to increase to (60/40)*30 L = 45 L

    and water to be *added* = 45-30 = 15 L

    0
    2021-12-03T08:48:47+00:00

    Answer:

    15 Litres of water

    Step-by-step explanation:

    Concentration = number of moles per volume

    Number of moles of Nitric acid in 30 Litres:

    30*0.6=18

    and after mixing, concentration = 40%= 0.4

    so, volume = 18/0.4=45 Litres

    so, water to be added is 45-30= 15 Litres

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