Question

Which of the following mixtures would result in a buffered solution when 1.0 L of each of the two solutions are mixed. 0.4 M HNO3 and 0.8 M NaOH O 0.4 M HNO3 and 0.8 M HE 0.4 M HNO3 and 0.4 M NaNO3 0.4 M HNO3 and 0.8 M NaF 2 points Save Answer

Answer 1

Answer

Correct answer is 0.4 M HNO₃ and 0.8 M NaF

ANSWER A weak and as an and strong Aid A buffer is defuced as the mixture of a weak and with ets conjugate base or a weak base with its conjugate auld. or weak base are defined or a base which dissociates partially in aqueous solution Whereas or base dissociates completely This a) 0.4M HNO₃ and 0.8m NaOH It is a mixture of a strong and with a strong base, thus thus this is not a buffer. b) 0-4 M HNO and 0.8M HF It is a mixture of two strong ands. so tuo aids don't make a buffer a c) 0-4 M HNO and 0.4 M NaNO3 It is a mixture of strong aud with its conjugate base. so it is not a buffer. d) 0.4M HNO₃ and 0.8M N OF HNO is a strong and base of a weak and HF HNO₃ + Naf - HF + NaNO₃.. which means solution we have a weak aud (HF) and its Long ugate base (NAF), so at will make buffer. and Naf is the conjugate In a 7 a good