If 50ml of 0.2 M KOH is added to 40 ml of 0.05 M HCOOH, the pH of the resulting solution is (`K_(a)=1.8xx10^(-4)`)

100 ml of 0.1 N NaOH is mixed with 50 ml of 0.1 N H_2SO_4 . The pH of the resulting solution is

100ml of 0.2 M H_(2)SO_(4) is added to 100 ml of 0.2 M NaOH . The resulting solution will be

If 20 mL of 0.1 M NaOH is added to 30 mL of 0.2 M CH_(3)COOH (pK_(a)=4.74) , the pH of the resulting solution is :

20 mL of 0.5 M HCl is mixed with 30 mL of 0.3 M HCl, the molarity of the resulting solution is :

At 90^(@) C, pure water has [H^(+)]=10^(-6) M.If 100 mL of 0.2 M HCl is added to 200 mL of 0.1 M KOH at 90^(@) C then pH of the resulting solution will be :

A 1L solution contains 0.2M NH_(4)OH and 0.2M NH_(4)Cl. If 1.0 mL of 0.001 M HCl is added to it what will be the [OH^(-)] of the resulting solution (K_(b)=2xx10^(-5))

1 mL of 0.1 N HCl is added to 999 mL solution of NaCl. The pH of the resulting solution will be :

When 20 mL of M//20NaOH is added to 10mL of M//10 HCI , the resulting solution will

200 mL of 0.4M solution of CH_(3)COONa is mixed with 400 mL of 0.2 M solution of CH_(3)COOH . After complete mixing, 400 mL of 0.1 M NaCl is added to it. What is the pH of the resulting solution? [K_(a) of CH_(3)COOH=10^(-5)]

If 200 ml of 0.031 M solution of H _(2) SO_(4) is added to 84 ml of a 0.150 M KOH solution. What is the pH of the resulting solution? (log 7 = 0.845)