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28-04-2019
Chemistry

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

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28-04-2019

Answer:

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

Explanation:

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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