A student mixes four reagents together, thinking that the solutions will neutralize each other. The solutions mixed together are 50.0 mL of 0.100 M hydrochloric acid, 100.0 mL of 0.200 M of nintric acid,500. mL of 0.0100 M calcium hydroxide, and 200.0 mL of 0.100 M rubidium hydroxide. Is the resulting solution neutral? If not, calculate the concentration of excess H+ or OH- ions left in solution.

Question

A student mixes four reagents together, thinking that the solutions will neutralize each other.  The solutions mixed together are  50.0 mL of 0.100 M hydrochloric acid, 100.0 mL of 0.200 M of nintric acid,500. mL of 0.0100 M calcium hydroxide, and 200.0 mL of 0.100 M rubidium hydroxide. Is the resulting solution neutral? If not, calculate the concentration of excess H+ or OH- ions left in solution.

DrBob222 · Answer

Calculate mols H^+ from the acids and mols OH^- from the bases. Total H^+ and total OH^- and you'll know which is the larger. Subtract one from the other to see which is in excess and by how much.

melbell · Answer

Thank you so much! this is a lot easier than the way I was originally trying to solve it

Anonymous · Answer

.00588M