The balanced chemical equation for the above reaction is as follows ; Ca(OH)2 + 2HCl —> CaCl2 + 2H2O Stoichiometry of Ca(OH)2 to HCl is 1:2 Number of Ca(OH)2 moles present - 0.001 mol/L / 1000 mL/L x 25 mL Number of Ca(OH)2 moles = 2.5 x 10^(-5) mol Number of HCl moles needed for neutralisation = 2.5 x 10^(-5) mol x2 = 5 x 10 ^(-5) mol The molarity of HCl solution is 0.005 M The solution contains 0.005 mol in 1000 mL Therefore volume of 5x10^(-5) mol in = 1000/0.005 x 5 x 10^(-5) mol = 10 mL 10 mL of HCl is needed for neutralisation
Weathering is everywhere. An example of physical weathering would be a river flowing on rocks slowly over time the rock will wear down and an example of chemical weathering is acid rain aka the rust on a car.