Given: Molarity of HCl: 0.450 volume of HCl: 13.50 mL Volume of [B4O5(OH)4^2-] u

Question

Given: Molarity of HCl: 0.450 volume of HCl: 13.50 mL Volume of [B4O5(OH)4^2-] used: 28.00 mL
Find the molarity of [B4O5(OH)4^2-]
Please help and show solutions! THANK YOU Given: Molarity of HCl: 0.450 volume of HCl: 13.50 mL Volume of [B4O5(OH)4^2-] used: 28.00 mL
Find the molarity of [B4O5(OH)4^2-]
Please help and show solutions! THANK YOU Molarity of HCl: 0.450 volume of HCl: 13.50 mL Volume of [B4O5(OH)4^2-] used: 28.00 mL
Find the molarity of [B4O5(OH)4^2-]
Please help and show solutions! THANK YOU

Explanation / Answer

[B4O5(OH)4^2- ]+ 2 HCl + 3 H2O ---------> 4 H3BO3 + 2 Cl-

M1V1/n1 = M2V2/n2

Given that,

M1 = 0.450 M, V1 = 13.50 mL, n1 = 2 mol

M2 = ? , V2 = 28.00 mL , n2 = 1 mol

=> 0.450 x 13.50 / 2 = M2 x 28.00 / 1

=> M2 = 0.11 M <<<<<<-----------(ANSWER)

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