In a titration, 25.00mL of 0.10mol L-1 sodium hydroxide solution was required to neutralize 12.5 mL of hydrochloric acid. Calculate the concentration of hydrochloric acid.
A student wants to prepare 250 mL of a 0.035 mol L-1 solution from the primary standard, anhydrous sodium carbonate. Calculate the mass of anhydrous sodium carbonate that is needed.
Assuming Ni(L)BH4 has perfect C3v symmetry, list out all the IR-active stretching modes in a table. Hence, predict the total number of observable IR absorptions for Ni(L)BH4.