Examlex
Calculate the weak acid,HA,concentration that remains in the aqueous phase when 50.0 mL of 0.184 M HA at pH = 4.75 is extracted with 50 mL of toluene three times.The partition coefficient for the extraction is 5.17,favoring toluene.The Ka for HA is 8.0 x 10−4.
Soviet Union
A former federal socialist state in northern Eurasia that existed from 1922 to 1991, officially known as the Union of Soviet Socialist Republics (USSR).
Communist-Allied
Being aligned or associated with Communist ideologies or entities, often in a geopolitical sense referring to nations or groups.
Ideological Confrontation
A conflict or clash between differing belief systems, values, or ideologies.
United States
A country in North America consisting of 50 states, a federal district, and several territories, known for its significant influence on global affairs.
Q2: For the polyprotic acid H<sub>3</sub>A,which of the
Q4: In addition to redox indicators and starch-iodine
Q7: The mass spectrum of an unknown compound
Q13: Common_ indicators are anionic dyes that are
Q15: A student prepares a solution using a
Q17: To correct for the effect of ionic
Q19: Ammonia,0.10 M,is used as an auxiliary complexing
Q198: According to Adam Smith,the success of decentralized
Q245: A rational decisionmaker<br>A) ignores marginal changes and
Q420: Refer to Figure 2-14.It is possible for