Which buffer system will have the highest buffering capacity, at the pH=7.2? Select one
O a The buffer whose pka=8.5
O b. The buffer whose pka-6
O c. It does not depend on ka
O d. The buffer whose pka=78​

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 4.20 mol fe and 6.70 mol nio(oh) react?