Answer to Question #138126 in General Chemistry for BRIANNA SMITH

Question

How many ml of 1.00M HCl do I need to add to 10.0ml of 1.00M NaOH to get a solution with pH = 1? (Please show your work.)

Answer 1

С_HCl=1,00 M

V_NaOH=10.0 ml, C_NaOH=1.00 M

HCl + NaOH = NaCl + H₂O

H⁺ + OH^{- =} H₂O

С_NaOH = n_NaOH/V_NaOH(L)

n_NaOH = С_{NaOH *} V_NaOH(L) = 1,00 M _* 0, 010 L = 1_*10^-2 moll

n_OH^-=n_H⁺

V_HCl = n_HCl/С_HCl = 1_*10^-2 moll / 1,00 M = 0,01 L = 10 ml

You need 10 ml of 1,00 M HCl