| yeah sounds good.
for smder's question,
a) mix with water and stir carefully. the CaCO3 should precipitate. once precipitation is complete, filter using filter paper.
b) First measure the volume of the solution. now since we have a volatile and a nonvolatile substance, we use distillation to separate completely. distill the water and what remains is NaCl. measure the mass of NaCl and we can find the concentration.
c) this one i'm not too sure. the only thing i can think of is distillation. however, distillation of two volatile liquids won't be pure, but i guess it'll be close enough. any other way?
about salt bridge ... i thought a salt bridge is just a tube or a porous membrane that allows ions to flow through to balance the charge in the two cells. this way, the redox can occur spontaneously w/o interference.
what is wrong with the Bohr model of the atom? |