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Question- What is the pH of a phosphate buffer when [H2PO4-] = [H2PO4^2-] ? I have the pka for HsPO4- is 7.20. The pka for HCH3O2 is 4.74. The Ka for the system is ka2= 6.3e-8. For H3PO4 the first acidic proton has ka1= 7.2e-3
I know we are supposed to utilized pka and the Henderson-Hasselbach equation
Given that Kp for 2SO2(g)+O2(g)=2SO3(g) equals 3.18 at 1000K. Figure out what must be the value of Kc for this same equilibrium.
At 1000 deg. K, a sample of pure NO2 gas decomposes. 2NO2(g)f/r2NO(g) + O2(g) The equilibrium constant Kp is 158. analysis shows that the partial pressure of O2 is 0.14 atm at equilibrium.
Problem- 61.4g unknown metal, with a molar mass 97.5 g/mol, has an initial temperature of 26.5oC. What is the final temperature when 1.10kJ of heat added to the metal
Question- Photochemical reactions often produce different products than thermal reactions with the same reactants. Why
Do the 13 CNMR spectrums unambiguously show the position of the carbon-carbon double bond. How.
24.6g of a hydrated salt of MgSO4.XH20, gives 12.0g of anhydrous MgSO4 on heating. What is the value of x?
Draw a line-bond structure for a compound with a molecular formula of C5H14 and one carbon with only one hydrogen attached to it.
Draw the lewis structures for each of the following molecules or ions. Which do not obey the octet rule? (a)NO (b) AlH3 (c) ICl2^- (d) OPBr3 (the P is the central atom) (e) XeF4
Which bronsted-lowry acid is not considered to be a strong acid in water. A)H I B)H Br C)H2S O3 D)H NO3
What are its values of DeltaG of vaporizatoin and DeltaS of vaporization at 61 degrees Celsius?
An iron bar of mass 781 g cools from 94°C to 5°C. Calculate the heat released (in kilojoules) by metal.
The volume of a single molecule of water is 2.99 x 10^-23 mL. For a sample of gaseous water at 1.00 atm and 150° C, what fraction of the containers volume is occupied by the molecules themselves
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