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  4. What is the total number of moles of H2SO4 needed to prepare 5.0 L of a 2.0 M solution of H2SO4 ?

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Q. What is the total number of moles of $ H_2SO_4 $ needed to prepare $ 5.0\, L $ of a $ 2.0\, M $ solution of $ H_2SO_4 $ ?

UPSEEUPSEE 2009

Solution:

Molarity of a solution is the amount of moles per litre of solution.

Hence,

Number of moles $=$ Molarity $\times$ Volume (in $L$ )

$\Rightarrow $ Number of moles of $H _{2} SO _{4}=2.0\, M \times 5.0\, L$

$=10$ moles