The pH of a solution prepared by mixing 2M 100mL HCl and 1M 200mL NaOH at 25C is
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Answer:pH=7
Explanation:
HCl + NaOH =NaCl + H2O;
Therefore HCl is to NaCl ratio is 1:1
No of moles of HCl reacted =[2/1000] * 100ml
=0.2mols
No of moles of NaCl reacted=[1/1000] *200ml
=0.2mols
there all the HCl mols reacts with all of the NaOH to produce 0.2mols of NaCl...therefore only NaCl remains at last , which is neutral....neither acidic nor neutral...any neutral solution has a pH value=7
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