Question 5 Copy and complete the following table: Indicator Bromothymol blue Methyl orange Phenolphthalein Colour in acid Colour in base Question 6 use. represents a simpued kidney m is machine) Blood leaves the pr essel x in the lower arm and re markod Y. Inside the machine, membranes. Surrounding the dialysis fluid containing sug noentration as found in the pe patient's blood flows betwe stances which are present out of the blood throught the dialysis fluid. bialysis fuld in 6.1 What is an endpoint as it is known during a titration? Explain how it differs from an 6.2 Describe two ways you could use to identify and confirm the end point of a reaction between a strong base and a strong acid. Give an example of the indicator you would 6.3 A solution made from pure barium hydroxide contained 2,74 g in exactly 100 cm of water. Using phenolphthalein indicator, titration of 20,0 cm of this solution required 18,7 cm of a hydrochloric acid solution for complete neutralisation. 6.3.1 Write the equation for the titration reaction 6.3.2 Calculate the molarity of the barium hydroxide solution. 6.3.3 Calculate the moles of barium hydroxide neutralised. 6.3.4 Calculate the moles of hydrochloric acid neutralised. 6.3.5 Calculate the concentration of the hydrochloric acid in mols. dm 6.3.6 Using your result in question 6.2.5, calculate the pH of the hydrochloric acid solution 6.3.7 Therefore calculate the dissociation constant of this reaction and explain what is meant by the results. 6.4 The hydronium ion concentration of a 0,500 moldm solution of HF at 25°C is found to be 0,0185 M. Calculate the dissociation constant for HF at this temperature. alysis membrandialysis ery or a vein? 7-containing subst ysis fluid. Why is be removed? s that occur in t! in the kidney m have equal cr blood of the would you ex and give ar Question 7 Ammonium thioglycolate is also known as a perm salt. Ammonium thioglycolate undergoes a reversible reaction to form thioglycolic acid and free ammonia. sition of uri HSCH2COO (aq) + NH4+ (aq) = HSCH2COOH(aq) + NH3(aq) na cold Identify the conjugate acid base pairs in the above reaction​