In: Chemistry
20.0 mL of nitric acid (HNO3) solution is neutralized with 30.0 mL 0.10M of potassium hydroxide (KOH) solution. what is the concentration of nitric acid solution? The answer is 0.67 M but how do you get that?
KOH + HNO3 -------> KNO3 + H2O
1 mole 1 mole
HNO3 KOH
M1 = M2 = 0.1M
V1 = 20ml V2 = 30ml
n1 = 1 n2 = 1
M1V1/n1 = M2V2/n2
M1 = M2V2n1/V1n2
= 0.1*30*1/20*1 = 0.15M >>>> answer