For the next three problems, consider 1.0 L of a solution which is 0.6 M NH4Cl and 0.2 M NH3 (Ka for NH4Cl = 5.6 x 10-10). Assume 2 significant figures in all of the given concentrations so that you should calculate all of the following pH values to two decimal places.

1. Calculate the pH of this solution.

2. Calculate the pH after 0.10 mol of HCl has been added to the original solution. Assume no volume change on addition of HCl.

3. Calculate the pH after 0.20 mol of NaOH has been added to the original buffer solution. Assume no volume change on addition of NaOH.

## State when sodium chloride is added to the solutionA solution contains one or more of the following ions: Pb 2+, Ca 2+, and Zn 2+. When sodium chloride is added to the solution, a precipitate forms |

## How many grams of nickel would be electroplatedhow many grams of nickel would be electroplated by passing a constant current of 7.2 A through a solution of NiSO4 for 90 minutes. |

## What is the predicted freezing pointIf the solution is 40.0% K2CO3 by mass, what is the predicted freezing point of this solution in °C, assuming full ionization. |

## Depict electron-flow arrows on the structureDraw electron-flow arrows on the structure on the left to indicate how the electrons reorganize to give the structure. Please Draw all steps and add charges where needed. |

## What mass of magnesium chloride is neededwhat mass of magnesium chloride is needed to react with 145 grams of silver nitrate according to the following reaction: MgCl2+2AgNO3=Mg(NO3)2+2AgCl? |

## Compute the ph at the equivalence point for titratingCalculate the pH at the equivalence point for titrating 0.170 M solutions of each of the following bases with 0.170 M HBr. |

## What is the molar mass of glucosewhat is the molar mass of glucose if 22.5g gives a freezing point of -0.930 C when dissolved in 250 g of water? |

## Compute the ground-level centerline concentrationThe wind speed is 4.8 m/s on a slightly sunny morning and plume rise is 20 m. (a) Calculate the ground-level centerline concentration 2.0 km downwind from the stack. (b) Calculate the concentration at 100 m off the centerline at the same x distanc.. |

## What is the concentration of ch3oh in a solutionwhat is the concentration(M) of CH3OH in a solution prepared by dissolving 16.8 g of CH3OH in sufficient water to give exactly 230 mL of solution. |

## How many quarts can be producedIf the density of ethyl alcohol is 0.789 g/ml, how many quarts can be produced by the fermentation of 100.0 lbof sugar? |

## Compute the number of joules of work accomplishedthat during one such stroke the opposing pressure in the tire was 30.0lb/in2 above the normal atmospheric pressure of 14.7 lb/in2. Calculate the number of joules of work accomplished during each stroke (1 atm= 101.325 J) |

## State minimum pressure must be supplied to a reverse osmosisWhat minimum pressure must be supplied to a reverse osmosis water purification system in order to overcome the osmotic pressure in water that is 1.24 M in total dissolved ions at 16 C? |

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