Calculate the cka and pcka for this reaction

Reference no: EM133257638

Question - Hydrogen cyanide, HCN, is a monoprotic weak acid that donates one equivalent of H+ to form cyanide ion, CN?:

HCN(aq) ? H? + CN? Ka = 10-9.21

Both forms of cyanide are very toxic, so human exposure should be minimized. In answering the following, assume an ionic strength of 0.5 M and a temperature of 25 ºC.

a) Calculate the cKa and pcKa for this reaction

b) A solution of industrial wastewater containing TOTCN = 450 μM is brought into the lab. The laboratory personnel measure the paH to be 7.91 using a pH electrode and meter. What is the HCN(aq) concentration?

c) Human exposure concerns arise when the HCN(aq) concentration is greater than 1.0 μM because it can volatilize and become HCN(g). Instruct the laboratory personnel on what paH they should adjust the solution to so as to keep the lab safe from HCN vapors.

Reference no: EM133257638

Questions Cloud

Which types of entry modes and scales of entry could be used : BUSINE 6030 Kennesaw State University which types of entry modes and scales of entry could be used when amazon is expanding to a new market?

What are the personality components of each theory : Evolutionary theory - Existential-humanistic theory - What are the personality components of each theory? What are the strengths and weaknesses of each theory

Describe the four remedies available to consumers for breach : Describe the four remedies available to consumers for breaches of guarantees of service outlined in the consumer guarantee act 1993?

Explain at least two principles that have been breached : FINA 210 Concordia University When they found out, the couple laid a complaint against the conduct of the licensee. Explain at least two principles that have

Calculate the cka and pcka for this reaction : Hydrogen cyanide, HCN, is a monoprotic weak acid that donates one equivalent of H+ to form cyanide ion, Calculate the cKa and pcKa for this reaction

Describe one of your experiences in which your attitude : Describe one of your experiences in which your attitude towards a product/ brand/company/place changed and try to analyze how this happened

What could be the reasons that small countries in europe : INTL 1510 Niagara College What could be the reasons that small countries in Europe are considering to join the EU? What could be the potential benefits for them

Explain the stages of your theory that would match up : Therefore, imagine that you are Erik Erikson. Explain the stages of your theory that would match up during these age ranges (4-14)

What are 2 characteristics in the job characteristics model : PS 5001 Columbia University What are 2 characteristics in the Job Characteristics Model (Figure 6.1) that either are present or are absent in the case. Explain

User Account

All Pages