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    9.This question concerns four solutions, A to D. They were prepared by mixing equal volumes of 0.2 mol dm–3 solutions of two different substances. The substances were



    A HCl(aq) and NaOH(aq)

    B HCl(aq) and NaCl(aq)

    C NH3(aq) and NH4Cl(aq)

    D CH3COOH(aq) and CH3CO2Na(aq)





    c) have a chloride ion concentration of 0.2 mol dm–3.



    The answer is B and I don't understand why it isn't A



    Please please help with this question !



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    I think you write out the equation for the reaction and compare the stoichiometric ratios? Did you ever find out explanation for the answer?
 
 
 
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