Is the Combined Solution Acidic or Basic?

[Zoey Brown]

Homework Statement

A student has 250ml of 1.5M HCl and 150ml solution of 2.0M Ba(OH)2. When he mixes the 2 together, is the combined solution acidic or basic?

Homework Equations

n=cv
ph=-log[h]

The Attempt at a Solution

the limiting reactant is Ba(OH)2. it is .3 moles which means bacl2 will also be .3 moles

 

[symbolipoint]

Which reactant is in excess?

Change each quantity to moles. Write the reaction. Use ratios according to the written reaction and compare to the moles you started for each reactant.

 

[epenguin]

H'm yes, but moles of what? When he writes the reaction as you suggest he may well see that it's not the moles of "Ba(OH)₂ or of Ba that most matter.

 

[symbolipoint]

H'm yes, but moles of what? When he writes the reaction as you suggest he may well see that it's not the moles of "Ba(OH)₂ or of Ba that most matter.

BOTH of them