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03-05-2018
Chemistry

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What is the M of NaOH if it takes 40ml of NaOH to reach the equivalence point in a titration with 50ml of 0.2M HCL

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mkryukova19 mkryukova19

03-05-2018

NaOH+HCl ----->NaCl+H2O

number mole NaOH = number mole NaOH
M -molarity, V - volume
M(NaOH)*V(NaOH) = M(HCl)*V(HCl)
M(NaOH)*40 ml = 0.2 M*50 ml
M(NaOH)=0.2 M*50 ml/40 ml=1/4 M=0.25 M NaOH

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