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A titration has been carried out between: 50 mL of HCl (concentration unknown) 0.2 M NaOH Indicator: phenolphthalein (colorless in acid and pink in basic medium) If 37.8 mL of 0.2 M NaOH has been used to fully neutralize (end-point) 50 mL of HCl, calculate the moles of HCl in 50 mL.
Hint: Write the balanced equation for HCl and NaOH and identify the reaction ratio between NaOH and HCl. A. 0.01512 moles of HCl B. 7.56 × 10⁻³ moles of HCl C. 1.512 moles of HCl D. 1.506 × 10⁻³ moles of HCl
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