"Q a) A technique used where a solution of known concentration is used to determine theconcentration of unknown solution .the type of reaction is neutralisation, where acid and basereacts to each other to form salt and water only as their end productsQ b) Which acid and base was used you haven’t told me; but if is hydrochloric acid andsodium chloride thenNaCOOH+NaOH>NaCH3+H2OShow their ratios in which the two can combine to neutralise each other in order to determineand calculate the their respective moles that participated in the reaction and hence theirconcentration for their effective neutralisation Q c) Used burette because of its precision, it used to measure amount ofsodium hydroxide Q d) Check of the concentration of the base provided and itsvolume that was required toneutralise with the acid[NaCOOH] completely, and determine the numbermoles by gettinga product between concentration[0.502 mol/L] andvolume required in litre[35.42ml]. i.emoles=concentration*volume required in litres .=0.502mol/L*0.03542=0.01778 molQ e) Using the mole ratio(1:1) between the acetic acid and NaOH gotten from a well- balanced equation , to determine the number of moles of the acid onto the volume[20ml]used,concentration is determined by taking the number moles[0.01778 mol] of the acid divided bythe volume[20 ml] of the acid required to neutralise the NaOH.=0.89MQ f) When the liquid turns pink, they used a base such as sodium hydroxide to neutralise theacid, phenolphthalein is the indicator,when its added to the liquid the colour changes to pink Q g) the two ions are both electropositive and electronegative in respect to their original Tcompounds of sodium hydroxide and acetic acid, therefore they will participate fully on thisreaction to yield or produce a product of water.Q h) Take the acid and place it in a clean test-tube and put 2-3 drops of universal indicator,the colour colour changes in respect to the strength of the acid ,using PH chart chart crosscheck the colour rhyming the one shed by the acid in order to determine the the correct PH ofthe acid.Q i) [i] The apparatus used should be rinsed to avoid any contamination while carry out theexperiment.[ii] The prepared chemical reagents should be clearly labelled in their reagent bottles to avoidany confusion during the experiment of not using the appropriate chemical solution Q j) Rose petalscontains Anthocyanin’swhich enables to pink in acid, purple in neutral andad greenish –yellow in alkaline solutionsQ k i) using a known concentration of a base you can easily determine the concentration,when you are having a detailed with both the the concentration and the volume of the base,applying titration in order to determine the volume of the acid that will be required tocompletely neutralize the base ,using mole ratio determine the number of moles that reactedwith the base ,then comparing the volume to one litre of the same acid in order to determinethe number of moles in of the acid in one litre,which will be the concentration sinceconcentration is number of moles in one litre of its own liquid Qk ii) HCI+NaOH>NaCI+H2O0.1522moles=1000 ml what about 29.25ml of NaOH will have how many moles [29.25*0.1522]/1000=0.00445185 molesMole ratio=1:1Moles of HCI=0.00445185Concentration will be 0.00445185moles=35ml what about in 1000 ml[0.00445185*1000]/35=0.127 M "