Questions LLC
Login
or
Sign Up
Ask a New Question
Chemistry
Chemical Reactions
pH Calculation
Calculate the ph of a 0.20 solution of KCN
1 answer
aaa
You can
ask a new question
or
answer this question
.
Similar Questions
Calculate the mass (in mg) of KCN needed to make 500. mL of aqueous KCN solution with a pH of 10.00. The Ka of HCN = 5.0 x
Top answer:
pH = 10; pOH = 4 .......CN^- + HOH ==> HCN + OH^- E......x.............1E-4...1E-4 Kb for KCN =
Read more.
When a 5.00-g sample of KCN is dissolved in water in a calorimeter that has a total heat capacity of 2.642 kJ·K–1, the
Top answer:
wow. 2014. :0..
Read more.
When a 3.00-g sample of KCN is dissolved in water in a calorimeter that has a total heat capacity of 1.123 kJ·K–1, the
Top answer:
q = mass sample x Ccal x delta T. Divide by 3 to obtain q/1 g sample, and multiply by molar mass to
Read more.
When a 4.00-g sample of KCN is dissolved in water in a calorimeter that has a total heat capacity of 1.797 kJ·K–1, the
Top answer:
q = 1.797 kJ/K x 0.4 K = ? kJ. q in kJ/g = q/4.00 q in kJ/mol = (q/4.00) x molar mass KCN.
Read more.
When potassium cyanide (KCN) reacts with acids, a deadly poisonous gas, hydrogen cyaninde (HCN) is given off. Here is the
Top answer:
It appears that the mole ratio is 1:1 from the balanced equation. How many m oles of KCN is .140
Read more.
0.250 g KCN is dissolved in 50 mL of water, and added to 2 mL of NaOH then mixed with 48mL of water. What is the molar
Top answer:
Do you want concn in M or g/L. I will assume you want molarity = M mols KCN = grams/molar mass KCN =
Read more.
3.71 When potassium cyanide (KCN) reacts with acids, a deadly poisonous gas,
hydrogen cyanide (HCN), is given off. Here is the
Top answer:
To calculate the amount of HCN formed in grams, we need to determine the moles of KCN and then use
Read more.
When potassium cyanide (KCN) reacts with acids, a deadly poisonous gas, hydrogen cyanide (HCN), is given off. Here is the
Top answer:
How many moles of KCN do you start with? YOu get the same number of moles of HCN.
Read more.
The Ksp of Ni(CN)2 is 3.0 × 10−23. What is
the molar solubility of Ni(CN)2 in a 0.065 M KCN solution? Answer in units of
Top answer:
I got it! The initial concentration of CN- would be 0.065 M rather than 0 M.
Read more.
Potassium cyanide (KCN) reacts with acids to produce the poisonous hydrogen cyanide gas, HCN, according to the reaction below:
KC
Top answer:
Just follow the steps in this worked example.
Read more.
Related Questions
(a) Calculate the molarity of a solution that contains 0.175 mol
ZnCl2 in exactly 150 mL of solution. (b) How many moles of HCl
A solution of trioxonitrate (V) acid contained 0.67g in 100cm3. 31.0cm3 of this solution
neutralized 25cm3 of a sodium
25cm3 Of 3g Of Hydrated Sodium Trioxocarbonate(iv) Solution (NaCO3XH2O)Per 250cm3 Was Neutralized By 13.20cm3 Of 0.16m
A solution of trioxonitrate(V) acid contained 0.67g in 100cm^3. 31.0cm^3 of this solution neutralized 2.5cm^3 of a sodium
A 40.0 mL solution containing a mixture of 0.0526 M KCN and 0.0526 M KCl is titrated with 0.0889 M AgNO3 .
What is the
The density of an aqueous solution containing 10% of ethanol (C2H5OH) by mass is 0.984 g/ml.
A) Calculate the molality of this
Solution x has a pH of 4.35. Solution y has 10- times high [OH-] compared to solution x. Solution z has a pH 4.0 units higher
1. Calculate the amount of fluorescein (MW 332.31) you will need to make 10 mL of 15 mM solution in ethanol (EtOH).
My
what is the minimum of amount of KCN in moles needed to extract 29 grams of gold
25cm3 Of 3g Of Hydrated Sodium Trioxocarbonate (iv) Solution (NaCO3XH2O)per 250cm3 Was Neutralized By 13.20cm3 Of 0.16m
