Question

1)The end point in a titration of a 45ml sample of aqueous HCl was reached by addition of 30ml of 0.6M titrant. The titration reaction is

2HCl+Ca(OH)2→CaCl2+2H2O

What is the molar concentration of HCl?

2) If a catalyst is added to a reaction, the reaction will most often generate products:

Answer 1

we know during the process of fitration, the end I point is reached or the neufralisation is reached Яло , Ma Ma Ve cИ, u, V, — 0 — (945 , hal = basicity and aidile of and & base respectively Ma, Mo & Molarity of and 4 base respectively. Va, vo e volume of aud & base respect vely. Va = 45 ml Ma = ? ma l V, 250 ml M, 5 06 м п, 2

Putting these values in equation @ we get ? na Ma va = o M V 7 IX Max 45= 2 x 0.6 x 30 - Mas 2x0.6 x 30 45 8) Ma a 0.8 M 8. The molar concentration of file is 0.8 M. A catalyst is to increase the 2) A catalyst is a substance that can be added to a reaction to increase the reaction rate without getting consumed in the process. Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism. proces reaction