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How many moles of H\(_2\)SO4 are there in 50 cm\(^3\) of 0.108 mol dm\(^3\) solution of the...

Chemistry
WAEC 2020

How many moles of H\(_2\)SO4 are there in 50 cm\(^3\) of 0.108 mol dm\(^3\) solution of the acid?

  • A. 5.4x 10
  • B. 5.4 x 10\(^{-3}\)
  • C. 5.4 x 10\(^{-2}\)
  • D. 5.4x 10\(^{-1}\)
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Correct Answer: Option B
Explanation

No. of moles = \(\frac{molar conc \times volume}{1000}\)

No. of moles = \(\frac{0.108 \times 50}{1000}\)

: No. of moles = 0.0054 moles = \( 5.4 \times 10^{-3}\)


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