Sage-Tips

What is the pH of aqueous solution of 0.1 M HCN?

5.2
pH of a 0.1M HCN solution is 5.2 .

What is the pH of a 0.10 M solution of HCN?

The pH of an 0.10 M HCN solution is found to be 5.2.

What is the pH of a solution of 0.25 M HCN?

4.90
The pH of a 0.25 M solution of HCN is 4.90.

What is the pH of an aqueous solution of 0.1 M HCN at 25c?

0.7
The pH of 0.1M aqueous HCN at 25°C (K.

What is the pH of a 0.0620 M solution of hydrocyanic acid HCN Ka 4.9 10 ⁻ ¹⁰?

Ka = 4.9E-10 = x 2/(0.0620-x). Since the power of the Ka is -10, we can safely assume that the x is small enough to ignore compared to the 0.0620, so it becomes 4.9E-10=x 2/0.0620. From that x (which is equilibrium [H +]), we can calculate pH = -log[H +].

What is the pH of 0.10 M nh3?

The pH = 11.3 .

What is the value of Ka for HCN?

The Ka for HCN is 4.9 x 10-10.

What is the pH of aqueous solution of NH4Cl?

NH4Cl ionises in water to form NH4+ and Cl-. NH4+ is the conjugate acid of the weak base NH3 and undergoes hydrolsis to produce H3O+( H+). hence we can say that the aqueous solution of ammonium chloride is acidic and its pH value is 4.6-6.0.

What is the pH of KCN salt?

KCN is a salt of weak acid(HCN) and strong base(KOH). Use the relation for hydrolysis of salt of weak acid and strong base. pH=7+0.5(pKa+logC)

Can you calculate the pH of aqueous solution of HCl?

The pH is 6.96 — very slightly on the acid side of neutral. Can you calculate the pH of aqueous solution of 0.005 M HCL? The answer 2.3 for pH has only 1 significant digit . Do you know why this is so? 2 ) The calculation is totally independent of the volume . If you have 10mL or 1.0L or 100L of 0.05M HCl , the pH will always be 2.3.

What is the pKa value for CH3COOH?

For each compound enter compound name (optional), concentration and Ka/Kb or pKa/pKb values. For example: CH3COOH pKa=4.76 c=0.1

What is the pH of a strong acid in water?

Reality Note: pH above 14 or lower than 1.0 are not really meaningful. At these concentrations dissociation is somewhat inhibited. pH 1.0 is a 0.1 molar solution of a strong acid in water so pH is only really meaningful in fairly dilute solutions. 1. Mixture of a strong acid and a strong base (HCl + NaOH)