is mixed with 100 mL of 0.1 M H3PO4, what is the pH of the buffer mixture? The pKa of H3PO4 is 2.1. Acidic Buffer Solution:Let us assume the addition of a small amount of acid or base to a buffer solution. The chang...
What is the PKa of formic acid? What is the Bronsted-Lowry theory? Define Bronsted-Lowry acid How do identify the Bronsted-Lowry acids and bases? What is an arrhenius base? What are examples of Bronsted-Lowry acids? What do Arrhenius acids have in common with Arrhenius bases?
What is the concentration of X2− in a 0.150 M solution of the diprotic acid H2X? Molarity: Molarity is a concentration unit of moles of solute per liter of solution, meaning the moles of a sample are simply the product of the molar concentration and the volume in ...
The emf of the following cell was measured at 25∘C and found to be 0.322 V. What is the pH of the solution? Pt/H2(g)/HCl(?M,aq)/AgCl(s)/Ag Nernst Equation: Each electrochemical (redox) reaction has a cell potent...
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The isoelectric point of an amino acid is Athe pH at which it exists in basic form Bthe pH at which it exists in acidic form Cthe pH at which it exists in zwitterion form Dthe pH equal to its Pka.Submit (a) Write Zwitterion structure of glycine. (b) What is dematuration of prot...
— A car is in ___ way. A．a; a句意:怎么了？——一辆车挡住我的路了。结合语境可知上文特指的是某件事情，故用定冠词。下文为特指的是我前行的路，故也用定冠词，选D。 点评：冠词是一种虚词，在英语中只能和名词一起使用。不定冠词用在可数单数名词前，表示泛指任何一个。定...
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The formula is pH=pKa+log[A−][HA] which can also be used to find out the amount of acid and conjugate base to make a buffer solution of the required pH. Answer and Explanation: Important values: pKa of NH4+: 9.25 Using the H...
The pH scale is a scale from 0 to 14 that tells us how acidic or basic a substance is. Substances with a pH lower than 7 are acidic, and those with a pH higher than 7 are basic. Substances with a pH of exactly 7 are considered to be neutral....