Question

-50 ml burette -Titrant Stopcock -250 mL Erlenmeyer flask -Analyte CH Figure 2. Burettes are calibrated cylindrical tubes equipped with a stopcock to deliver accurately measured volumes of solutions Calcium metal reacts with water to produce calcium hydroxide that dissociates to produce Ca? (aq) and OH(aq) according to the following equations. Ca (s) + H2O (1) Ca(OH), (aq) = Ca(OH), (aq) + H(8) Ca2+ (aq) + n OH(aq) In this equation n is the number of moles of OH produced. The solution is titrated with HCI of known concentration and reacts with OH(aq) in the solution according to the following net ionic equation. H+ (aq) + OH- (aq) + H20 (1) By weighing a sample of Ca (s), the moles of Ca (s) can be calculated. From the titration data, the moles of OH" (aq) produced from the calcium hydroxide is determined. As a result, the mole ratio of Ca2+ to OH can be calculated. OOO..

Answer 1

Answer: - Page No - o Given that, Callium metal reacts water to produce Calcium hydroxide . thad dissociates to produce caat Coa) and Colt") (aq) according to the following eats. Ca(s) + thol) Cacott)n + H29) Calot) - Ca 2+ laq) + not loq) In this car 'n' is the number of Moles of Oh produced. The concentration solution is titrated with Hel of known and reacts with oth laa) in the solution. Htcaq) + 051 69) > H20 Lt) H -> 50ml burrette - Titocant stop cock (a) Burete contain solution of Known concentration , Here we know Concentration of Hu and is called titrant. solution in Burette – Hel Here analyte is Calcium hydroxide Tit 250 ml tot - Exlenmeyel flask Analyle and is prese

Page No - in Exlenneyer flask. Solution in flask Other information of - Cacot), volume, concentration is not given (6) Titration reaction is, - CaCOH), Caq) + 2HU loq) I rol 2 Mol Cach, laq) + 2H20W I MOI 2 HOI Total ionic Equation is written as Cadaq) + 204 Coq) + 24" (69) + 2u.com) > Gal tot aceast 2400) Net ionic Equation : 2014 (a) + 24 (aa) → 2H20 (4)