Question

How many hydroxide ions are needed to completely neutralize 1.0 liter of 0.50 M HCl?

Answer 1

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★Molarity=n/volume in letre

‡‡ n=no. of moles

↪0.5=n/1

↪n=0.5

↪1 mole=6.023×10^23

↪0.5 mole=0.5×6.023×10^23

↪3×10^23 ions needed