Question need answers to i and j, the rest have been solved. Please help I do kn

Question

Question
need answers to i and j, the rest have been solved. Please help I do know Pv=nRt is involved.

1) You are asked to make 110 mL of 1.227 M HCl starting with 4.0 M HCl.
a) The volume of 4.0 M HCl needed is (to 0.1 mL) _____33.7425_________ mL

2) You standardize the "1.227 M" HCl by pipetting a known amount of it into a flask and titrating to the phenolphthalein endpoint with an NaOH solution of known concentration
Experimental Data:
Volume of "1.227 M" HCl used 3.85 mL
Concentration of NaOH used 0.2007 M
Initial buret reading 0.08 mL
Buret Reading at endpoint 24.11 mL
Calculate:
b) Exact molarity of your HCl ___1.252___________ M

3) You weigh an empty gas buret, fill it to the 50.00 mL mark with distilled water and weigh it again.
Experimental Data:
Mass of empty gas buret 56.71 g
Mass of gas buret filled to 50 mL mark with water 108.94 g
Temperature of the water 29.9

Explanation / Answer

1) You are asked to make 184 mL of 1.157 M HCl starting with 3.0 M HCl.
a) The volume of 3.0 M HCl needed is (to 0.1 mL) :

the dilution formula:
C1V1 = C2V2
(1.227M)(110ml) = (4.0 M)(V2)
V2 = 33.74 ml

2) You standardize the "1.157 M" HCl
3.85 mL of "1.227 M" HCl were titrated with NaOH:
endpoint 24.11 mL - Initial 0.08 mL = 24.03 ml of 0.2007 M NaOH

Calculate:
b) Exact molarity of your HCl :
since they react in a ratio of 1 mole HCl with 1 mole NaOH, we can use the simplified titration formula where "solute = solute":
(M acid) (V acid) = (M base) (V base)
(M acid) (3.85 ml) = (0.2007 Molar) (24.03 ml)
M acid = 1.2526

3)
Mass of empty buret 56.71 g
Mass of buret filled with water 108.94 g
Specific Gravity of Mercury... 13.55

Calculate:
c) Density of water at 29.9

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