Select True or False The net ionic equation for the reaction occurring when a sm

Question

Select True or False The net ionic equation for the reaction occurring when a small amount of sodium hydroxide solution is added to a buffer solution containing MH_4CI and HH_3 is correctly shows here: True False Calculate the pH of a buffer solution that contains 0 25 M benzoic acid (C_6H_5CO_2H) and 0.15M sodium benzoic (C_6H_5COONa) [K_a - 6.5 times 10^-5 for benzoic acid (The approximation will work for this calculation.) 3.97 4.83 4 19 3.40 4.41 Select True or False The pH of a volition that is 0.20 M CH_3COOH and 0.20 M CH_3COONa should be higher than the pH of a 0 20 M CH_3COOH solution True False Assuming equal concentration of conjugal base and acid. which one of the following mixtures is suitable for making a buffer solution with an optimum pH of 9.2-9.3? CH_3COONa/CH_3COOM (K_a = 1.8 times 10^-5) NH_3/NH_4Cl (K_a -= 5 6 times 10^-10) NaOCI/HOCI (K_a = 3.2 times 10^-8) NbNO_2/HNO_2 (K_a = 4 5 times 10^-4) NaCI/HCI It Starting with 0 2501. of a buffer volition conta

Explanation / Answer

(14) This is not in the form net ionic equation.

(15)

pH =pKa + log(salt/acid)

= 4.187 + log (0.15/0.25)

= 3.965

= 3.97

(16) False

Since their cocn are same their pH willnot increase or decrease.

Pls post remianing questions separately.Ony one should be answered chegg rules

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