When potassium dichromate is added to concentrated hydrochloric acid, it reacts according to the following chemical equation K,C»O¬(s) + 14 HCI(aq) → 2 K* (aq) + 2 Cr³* (aq) + 8 CI¯(aq) + 7 H20(e) + 3 Cl2(g) producing a mixed solution of chromium(III) chloride and potassium chloride and evolving gaseous chlorine. Suppose that 6.20 g of K,Cr,O, reacts with concentrated HCI, and that the final volume of the solution is 100.0 mL. Calculate the final con- centration of Cr³+(aq) and the number of moles of chlorine produced.
When potassium dichromate is added to concentrated hydrochloric acid, it reacts according to the following chemical equation K,C»O¬(s) + 14 HCI(aq) → 2 K* (aq) + 2 Cr³* (aq) + 8 CI¯(aq) + 7 H20(e) + 3 Cl2(g) producing a mixed solution of chromium(III) chloride and potassium chloride and evolving gaseous chlorine. Suppose that 6.20 g of K,Cr,O, reacts with concentrated HCI, and that the final volume of the solution is 100.0 mL. Calculate the final con- centration of Cr³+(aq) and the number of moles of chlorine produced.
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Chapter4: Chemical Reactions
Section: Chapter Questions
Problem 4.116QP: Bone was dissolved in hydrochloric acid, giving 50.0 mL of solution containing calcium chloride,...
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Transcribed Image Text:When potassium dichromate is added to concentrated hydrochloric acid, it reacts
according to the following chemical equation
K,C»O¬(s) + 14 HCI(aq) →
2 K* (aq) + 2 Cr³* (aq) + 8 CI¯(aq) + 7 H20(e) + 3 Cl2(g)
producing a mixed solution of chromium(III) chloride and potassium chloride and
evolving gaseous chlorine. Suppose that 6.20 g of K,Cr,O, reacts with concentrated
HCI, and that the final volume of the solution is 100.0 mL. Calculate the final con-
centration of Cr³+(aq) and the number of moles of chlorine produced.
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