The molar concentration of chloride ions in the resulting solution of 300 mL of 3.0 M NaCl and 200 mL of 4.0 M BaCl2 will be
1.7 M
1.8 M
5.0 M
3.5 M
The hydrogen ion concentration of a solution is 3.98 × 10-6 mole per liter. The pH value of this solution will be
6.0
5.8
5.4
5.9