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Chemistry - Concentration Terms Question with Solution | TestHub

ChemistryConcentration TermsConcentration termEasy2 minPYQ_2020

ChemistryEasysingle choice

$1 litre$ of aqueous solution of $HCl$ has $pH = 1$ . How many litres of water must be added to create an aqueous solution with $pH$ of $2$ ?

Options:

Answer:

Solution:

$pH = 1 = - \log [H^{+}]$

$[H^{+}] = 10^{- 1} M$

Final $pH = 2; [H^{+}] = 10^{- 2} M$

$M_{1} V_{1} = M_{2} V_{2}$

$(0.1 M \times 1 Litre) = (0.01) V_{2}$

$V_{2} = 10 L$

Final volume $= 10 L$

Water added $= 10 - 1 = 9 L$

Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:Concentration TermsSubtopic:Concentration term

⏱ 2mℹ️ Source: PYQ_2020

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