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1) There is a aqueous solution that has 0.15M and a monoprotic acid that is 3.85. Calculate Ka and state if the acid is WEAK or STRONG.
2) The pKa of hydrogen cyanide is 9.21. In a 100mL solution there are 0.30M of hydrogen cyanide and 0.50M sodium cyanide, there is 0.0050 moles of solid sodium cyanide without changing the volume. Find the resulting pH of the solution.
3) Why would a monoprotic acid that is neutralized not always be neutral?
Calculate the molar mass of the compound if given that normal freezing point of C6H6 = 5.5 oC , the freezing point depression constant for C 6 H 6 = -5.12 o C/m .
A voltaic cell is based on the reaction Sn(s)+ I2 (s) --> Sn^2+ (aq)+ 2I^- (aq). Under standard conditions, what is the maximum electrical work, in joules, that the cell can accomplish if 70.0 g of Sn is consumed?
What is the IUPAC name for Fructose. Not the 1,3,4,5,6- Pentahydroxyhex-2-
A molecular orbital in a diatomic molecule that has a nodal plane containing the internuclear axis and no nodal plane perpendicular to the internuclear axis is of
If Ka for an acid, HA, is 0.00177, what is the pH at one half the equivalence point for a titration of 50.00 mL of 0.100 M HA with 0.100 M NaOH
A buffer that contains 1.10 M base, B, and 0.700 M of its conjugate acid, BH+, has a pH of 9.250. What is the pH after 0.0050 mol of HCl
If a pure R isomer has a specific rotation of -152.0°, and a sample contains 71.0% of the R isomer and 29.0% of its enantiomer, what is the observed specific rotation of the mixture
How many grams of NO2 will be produced when 2.0 L of nitrogen at 840mmHg and 24 C are completely reacted N2+2 O2-----2 NO2 How exactly do you calculate this
A possible side product of the aldol reaction of cinnamaldehyde and acetone is the self-condensation of acetone. draw the structure of the side product. explain how the experimental procedure we used is designed to minimize the formation of this s..
Estimate the vapor pressure of water a solution containing 30 g of glucose per 500 g of water at 25C, given that the vapor pressure of pure water is 2.338 KPa at the same temperature.
What is the mass (in kg) of helium if it filled a square room if the room has walls that are 9.5 feet high and 9.5 long and the density of helium is 0.18 g/L
A buffer is composed of 0.400 mol H2PO4 and 0.400 mol HPO4 diluted with water to a volume of 1.0 L. The pH of the buffer is 7.210. How many moles of HCL must be added to decrease the pH to 6.210? The answer is .327 mol. Can you please explain how ..
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