Chemistry, 20.03.2020 11:49 AldecuaF10
A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As a research technician at Pharma-pill, you are told that X-281 is a monoprotic weak acid, but because of security concerns, the actual chemical formula must remain top secret. The company is interested in the drug's KaKaK_a value because only the dissociated form of the chemical is active in preventing cholesterol buildup in arteries. To find the pKapKapKa of X-281, you prepare a 0.079 MM test solution of X-281. The pH of the solution is determined to be 2.70. What is the pKapKapKa of X-281
Answers: 1
of the X-281 medicne is 4.29.![[HA]=c=0.079 M](/tpl/images/0556/0891/2c7db.png)
is given by :![K_a=\frac{[A^-][H^+]}{[HA]}](/tpl/images/0556/0891/a5cb9.png)
..[1]![pH=-\log[H^+]](/tpl/images/0556/0891/cf945.png)
![2.70=-\log[H^+]=-\log[x]](/tpl/images/0556/0891/20209.png)
..[2]
![pK_a=-\log[K_a]=-\log[5.170\times 10^{-5}]=4.29](/tpl/images/0556/0891/10bcc.png)
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A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharm...
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