Answer:
9.61 % error
Explanation:
The formula for percent error is as follows:
% error = (experimental value - theoretical value) ÷ theoretical value × 100%
So to calculate the percent error all you have to you is plug in your values.
% error = (4.45cm - 4.06cm)/4.06 × 100%
= 0.39/4.06 × 100%
= 0.0961 × 100%
= 9.61 % error
From the chemical equation given:
H2SO4+2KOH--->K2SO4+2H2O
the two reactants, H2SO4 and KOH, are in 1:2 stoichiometric ratio.
No. of moles of KOH = 2* no. of moles of H2SO4
=2*0.1*0.033
The concentration of KOH = no. of moles / volume
=2*0.1*0.033/0.05
=0.132M
0.5 mols of NaCl* 58 grams of NaCl/1 mol of NaCl = 29 grams of sodium chloride
Salicylic acid has a benzenic ring, one carboxylic functional group and one phenolic hydroxilic functional group.
Explanation:
Salicylic acid has the molecular formula C₇H₆O₃ and the chemical diagram is found in the attached picture.
On the benzenic ring it have two functional groups namely the carboxylic group (-COOH) and the phenolic hydroxilic group (-OH).
Salicylic acid is a precursor in synthesis of the aspirin (acetylsalicylic acid).
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Salicylic acid
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