Question

how much of 0.1 M NaOH is needed to neutralize 5mL of 0.1 M of HCL to a ph 7(color on the ph scale)...Thank you

Answer 1

mL1 x M1 = mL2 x M2
Substitute and solve for the unknown.
mL*0.1M = 5 mL x 0.1M
mL = ?