Answer Happy

In Part C, to each of the five conical flasks, 20 ml of the sulfuric acid solution was transferred accurately. The phenol red indicator was added, and the samples were titrated with NaOH until the yellow colour change to a pale pink colour. Select the correct statement regarding this reaction c) The colour change corresponds to the end point of the titration and is observed when the indicator changes colour. The choice of indicator is determined by which will indicator undergoes a colour change close to the equivalence point of the reaction. The colour change is due to the equivalence point of the reaction, where the acid and base are present in the exact mole ratio specified by the balanced equation The colour change is due to due to the equivalence point of the indicator, where the acid and base form of the indicator are present in the exact mole ratio specified by the balanced equation The equivalence point of the reaction, also referred to as the end point of the reaction and is when the acid and base are present in the exact mole ratio specified by the balanced equation In a titration, 20.00 mL of 0.1042 mol/L PHP was titrated with NaOH until a colour change occurs in the presence of a suitable indicator The average titre value of NaOH used in the titration is 19.7 ml 00) What is the concentration of NaOH in mol/L? Provide your answer with three significant figures without units. Use 'exponential (E) notation if you are providing the answer in scientific notation (e.g. 5.21x1078 is written as 5.21E+78) Balance the following equation for the reaction of H2SO4 with NaOH by selecting stoichiometric coefficients, CE) Select '1' if the stoichiometric coefficients is one. NaOH + H2SO4 → • H2O + • Nat + SO42 CE) In a titration of NaOH and H2SO4, 20.25 mL of NaOH reacted with 20.00 mL portion of H2SO4 How many moles of NaOH reacted with H2SO4 in the titration. The concentration of NaOH is 0.097 mol/L Provide your answer with three significant figures without units. Use 'exponential (E) notation if you are providing the answer in scientific notation (e.g. 5.21x1078 is written as 5.21E+78) ca) In a titration of NaOH and H2SO4, 0.0197 mol of NaOH reacted with 20.00 mL portion of H2SO4 How many moles of H2SO4 reacted with NaOH in the titration. Provide your answer with four significant figures without units. The molecular mass of PHP is 204.22 g/mol. Use 'exponential (E) notation if you are providing the answer in scientific notation (e.g. 5.21x1078 is written as 5.21E+78) (H) In a titration, it is found that 0.0195 mol of H2SO4 exists in a volume of 20.00 mL. What is the concentration of H2SO4 in mol/L? Provide your answer with three significant figures without units. Use 'exponential (E) notation' if you are providing the answer in scientific notation (e.g. 5.21x1078 is written as 5.21E+78).