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Calculate the pH of a 0.0110 M solution of arginine hydrochloride (arginine ⋅HCl, H2Arg+). Arginine has p?a values of 1.823 (p?a1), 8.991 (p?a2), and 12.01 (p?a3).
Calculate the pH of a 0.0132 M solution of arginine hydrochloride (arginine HCI, H,Arg). Arginine has pK, values of 1.823 (pKa), 8.991 (pK2), and 12.01 (pK). 11.14 pH= Calculate the concentration of each species of arginine in the solution. H,Arg2+16.31 x10-12 М [H,Arg) = М 1.88 м HArg] = м [Arg] 0.26
Calculate the pH of a 0.01770.0177 M solution of arginine hydrochloride (arginine·HClarginine·HCl, H2Arg+H2Arg+). Arginine has p?apKa values of 1.8231.823 (p?a1pKa1), 8.9918.991 (p?a2pKa2), and 12.0112.01 (p?a3pKa3). pH=pH= Calculate the concentration of each species of arginine in the solution. [H3Arg2+]=[H3Arg2+]= MM [H2Arg+]=[H2Arg+]= MM [HArg]=[HArg]= MM [Arg−]=[Arg−]= M
Use mathematical induction to show that P(A1∩A2∩...∩An) = P(A1)P(A2|A1)P(A3|A1∩A2)....P(An|A1∩A2∩...∩ An-1) You can assume that you know P(A|B) = P(A|B)P(B)
Phosphoric acid is a triprotic acid with the p?a values p?a1=2.148, p?a2=7.198, and p?a3=12.375. You wish to prepare 1.000 L of a 0.0300 M phosphate buffer at pH 7.580. To do this, you choose to mix the two salt forms involved in the second ionization, NaH2PO4 and Na2HPO4, in a 1.000 L volumetric flask and add water to the mark. What mass of each salt will you add to the mixture? mass NaH2PO4= g mass Na2HPO4= g What other combination...
EDTAEDTA is a hexaprotic system with the p?apKa values: p?a1=0.00pKa1=0.00, p?a2=1.50pKa2=1.50, p?a3=2.00pKa3=2.00, p?a4=2.69pKa4=2.69, p?a5=6.13pKa5=6.13, and p?a6=10.37pKa6=10.37. The distribution of the various protonated forms of EDTA will therefore vary with pH. For equilibrium calculations involving metal complexes with EDTAEDTA, it is convenient to calculate the fraction of EDTAEDTA that is in the completely unprotonated form, Y4−Y4−. This fraction is designated ?Y4−αY4−. Calculate ?Y4−αY4− at two pH values pH=3.15 ?Y4−= pH=10.30 ?Y4−=
Problem 4. The truss shown below has A2 = 6 in?, A3= A1 = 212 A2, and E = 29,000 ksi. Calculate joint displacements and element forces if element 2 is fabricated 0.03 in too long. (15 Points) A 45° 18 ft-
Calculate the pH of a solution that is 0.00115 M in HCl and 0.0100 M in HClO2. Ka for HClO2 = 1.1X10^-2
10] Q3. (a) Prove the Bonferroni Inequality on three events A1, A2 and A3: P(An Agn A)21-P(A)- P(A2) - P(Aa) (b) Using the results in Q3.(a), and clearly describing the events At, A2 and A3. construct a 100(1-a)% joint confidence intervals for estima- tion of three parameters, denoted by 01,02 and 03, say.
10] Q3. (a) Prove the Bonferroni Inequality on three events A1, A2 and A3: P(An Agn A)21-P(A)- P(A2) - P(Aa) (b) Using the results in Q3.(a), and...
Calculate pH in a) a 0.005 M solution of HCl, and b) a 0.005 M solution of acetic acid and explain why the pH values are different.
Calculate the pH of a 1.41×10-2 M solution of the decongestant ephedrine hydrochloride if the pKb of ephedrine (its conjugate base) is 3.86.