George measures out a volume of 0.381 M HCl in an Erlenmeyer flask. He adds 28...

George measures out a volume of 0.381 M HCl in an Erlenmeyer flask. He adds 28 mL of deionized water. He finds that 21.95 mL of 0.445 M NaOH is required to completely neutralize the acidic solution. What volume of HCl did he initially obtain?

Expert Solution

HCl + NaOH -----------------> NaCl + H2O

1 mole 1 moles

HCl NaOH

M1 = 0.381M M2 = 0.445M

V1 = V2 = 21.95ml

n1 = 1 n2 =1

M1V1/n1 = M2V2/n2

V1 = M2V2n1/M1n2

= 0.445*21.95*1/0.381*1

= 25.64ml

initial volume of HCL = 25.64ml

queen_honey_blossom answered 2 years ago

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