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1. Calculation tasks a) How much water and how much 12M HCl solution (M = 36.5g / mol) should be used to prepare 70 ml of thi

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Answer #1

1) Calculate the required HCl mass:

m HCl = M * V * MM = 12 M * 0.07 L * 36.5 g / mol = 30.66 g

The required body of water is calculated:

m H2O = 70 g - 30.66 g = 39.34 g

2) The reaction that occurs is:

Br- + Phenol = Bromophenol

3) The diluted percentage is calculated:

% NaOH = 120 g * 40% / (120 + 100) g = 21.82%

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