Which one of the following combinations cannot function as a buffer solution?

a.) hcn & kcn

b.) nh3 & (nh4)2so4

c.) hno3 & nano3

d.)hf & naf

e.)hno2 & nano2

c.) HNO₃ & NaNO₃

Explanation:

A buffer system has 2 components:

Which one of the following combinations cannot function as a buffer solution?

a.) HCN & KCN. YES. HCN is a weak acid and CN⁻ (coming from KCN)  its conjugate base.

b.) NH₃ & (NH₄)₂SO₄. YES. NH₃ is a weak base and NH₄⁺ (coming from (NH₄)₂SO₄) its conjugate acid.

c.) HNO₃ & NaNO₃. NO. HNO₃ is a strong acid.

d.) HF & NaF. YES. HF is a weak acid and F⁻ (coming from NaF)  its conjugate base.

e.) HNO₂ & NaNO₂. YES. HNO₂ is a weak acid and NO₂⁻ (coming from NaNO₂)  its conjugate base.

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.  

2b2t

explanation:

2b2t