Calculate the ph

Assignment Help Chemistry
Reference no: EM13120035

In the titration of 68.0 mL of 1.0 M methylamine, CH3NH2 (Kb = 4.4 10-4), with 0.49 M HCl, calculate the pH under the following conditions.
a)after 50 mL of .049 M HCl has been added
b) at the stoichiometric point

Reference no: EM13120035

Questions Cloud

Find what is the probability it would be a student : What is the probability it would be a student, a faculty member, an admin staff member, a faculty or admin staff member and anyone except an admin staff member?
Calculate how much in sum the mariners are saving : First assume that all of the deferred money and accumulated interest is paid out along with the final salary payment at the end of 2012. Use 5.5% as the discount rate. What is the present value (as of the signing date) of Ichiro's contract under t..
Which test to use to compare means : While the 46 afternoon students' average score was 79.44 with a standard deviation of 6.62. (a) Which test would you use to compare the means?
Calculate the equilibrium concentrations of reactant : The equilibrium constant, Kc, for the following reaction is 1.29E-2 at 600 K: COCl2(g) CO(g) + Cl2(g)
Calculate the ph : In the titration of 68.0 mL of 1.0 M methylamine, CH3NH2 (Kb = 4.4 10-4), with 0.49 M HCl, calculate the pH under the following conditions.
Sales in inventory for raw materials : Compute the (a) inventory turnover, defined as cost of goods sold divided by average inventory, and (b) days' sales in inventory, defined as 365 times ending inventory divided by cost of goods sold, for both its raw materials inventory and its fin..
Commutative and associative properties of multiplication : Use the commutative and associative properties of multiplication and exponential notation to rewrite the product.
Probability that sample proportion is between a range : A random sample of 80 students is selected for a particular study. What is the probability that the sample proportion (the proportion living in the dormitories) is between 0.30 and 0.50?
Properties of real numbers : Consider the following properties of real numbers: Commutative Property of Addition [6] Commutative Property of Multiplication

Reviews

Write a Review

Chemistry Questions & Answers

  What is composition in mole fractions of solution

What is the composition in mole fractions of a solution of benzene and toluene that has a vapor pressure of 35 torr at 20 °C? Assume the mixture forms an ideal solution.

  What is the new temperature in oc

A 496-mL sample of a gas at 263 oC is cooled at constant pressure until its volume becomes 241 mL. What is the new temperature in oC?

  How many molecules of water present in drop of rain

The volume of a drop of rain was found to be 0.448 ml at N.T.P. How many molecules of water and number of atoms of hydrogen are present in this drop.

  Calculate the final temperature of ethanol

Calculate the final temperature of 33 mL of ethanol initially at 13 degrees Celsius upon absorption of 657 J of heat. (density of ethanol =0.789 g/mL).

  What is the concentration of oh- in a solution

What is the concentration of OH- in a solution that contains 0.225g of NaOH in 0.250L of solutio.

  What is the value of solubility product

The solubility of CaSO4 in pure water at 0.0 C is 1.13 gram per liter; what is the value of solubility product

  Predict the vapor pressure of a solution

Glycerol HOCH2CH(OH)CH2OH is a nonvolatile, water-soluble material. its density is 1.25 g/mL. Predict the vapor pressure of a solution of 2.40 x 10^2 mL of glycerol, in 395 mL of water, at the normal boiling point of water.

  How many molecules of water are produced

How many molecules of water are produced when 143 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water.

  What is the equilibrium partial pressure of n2o4

A 1.90 mole quantity of NOCl was initially in a 1.50 L reaction chamber at 400°C. After equilibrium was established, it was found that 36.0 percent of the NOCl had dissociated.

  Oxidation numbers of polyatomic ions

Many elements can have more than one charge or oxidation number. In this set of problems, we will assign oxidation numbers to each atom in sulfate, carbonate, bicarbonate, bisulfate, sulfite, nitrate, nitrite, chlorate, and perchlorate.

  Compute difference in pressure between ch4 and an ideal gas

Compute the difference in pressure between CH4 and an ideal gas if 14.0 moles of gas are in a 6.00 litres tank at the temperature of 21.1 degree celsius . The van der Waals constants for CH4 are a =2.300 L^2 x atm/mol ^2 and b=0.0430 L/mol.

  What is the mass percentages of butane and butene

A mixture of butene and butane burn in the air to give CO2 and H2O.suppose u burn 2.86g of the mixture and obtain 8.80g of CO2 and 4.14g of H2O.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd