Using a Standard Solution made of 73 grams of HCl dissolved in 2.00 L of water, you neutralize 125 mL of Ca(OH)2 by adding 250mL of your Standard Solution. What is the molarity of the Ca(OH)2 solution? 1.00 Molar
0.50 Molar
2.00 Molar
0.75 Molar

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.