Question

How many moles of H2SO4 are needed in 0.500m³ of a 0.150M tetraoxosulphate solution?​

Answer 1

0.015 moles

Step-by-step explanation:

0.500 m³ of a 0.150 M tetraoxosulphate solution contains 0.075 moles of tetraoxosulphate ions. Since 1 mole of H2SO4 is needed for every 2 moles of tetraoxosulphate ions, then 0.015 moles of H2SO4 are needed.