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An aqueous solution of .043 M weak acid HX, has a pH of 3.92. Explain what is the pH of the solution if .021 M of KX is dissolved in one liter of the weak acid?
If you wanted to make a 3 liter solution of 500 mM formic acid buffer at pH 3.9 how many grams each of sodium formate (MW=68g/mol) and formic acid (MW=46g/mol) would you add
If Formic acid (HCO2H, Ka = 1.8 × 10-4) is the principal component in the venom of stinging ants. Define what is the molarity of a formic acid solution if 25.00 mL of the formic acid solution want 49.80 mL of 0.0567 M NaOH to reach the equivalence..
Litmus paper is a classic pH indicator. Describe the color change litmus paper undergoes when placed in both acidic and basic solutions
What is the maximum mass of ammonia that can be produced from a mixture of 216.7 g of N2 and 50.20 g of H2
Calculate the concentration of CrO4^2- in a solution that is 0.0375M in chromic acid and 0.150M HCL. (Chromic acid is H2CrO4, a diprotic acid, Ka1= 1.80x10^-1, Ka2=3.20x10^-7 & Kw=1.00x10^-14).
silicon carbide which has the emperical formula sic melts at 2830 deg c. and is nearly as hard as boron nitride and
what is the concentration of hydrogen ions in a solution containing 0.321 m hocn cyanic acid and 0.223 m naocn sodium
A beaker contains 0.964 grams of nitrogen. How many moles of molecular nitrogen does the beaker contain?
A first-order reaction has a half-life of 55.0 min at 25 ºC and 6.8 min at 100 ºC. What is the activation energy for this reaction
find the theoretical percent yield amp percent error of the reaction.zirconium oxalate k2zrc2o43h2c2o4middoth2o was
Nitric acid is gernerated by the action of sulfuric acid on sodium nitrate. Nitrous acid is prepared by the action of hydrochloric acid on sodium nitrite. Why is nitrous acid prepared in situ rather than obtained from the reagent self.
The specific heat cacpacity of solid copper metal is 0.385/Jg-K. How many joules of heat are needed to raise the temperature of a 1.55-kg block of copper from 33.0 0C to 77.5 0C
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