Explain a buffer is prepared by mixing hcl and sodium acetat

Assignment Help Chemistry
Reference no: EM13541947

A buffer is prepared by mixing 204mL of .452M HCL and .500L of .400M sodium acetat. (a) What is the pH? (b) How many grams of KOH must be added to .500L of the buffer to change the pH by .15 units?

Reference no: EM13541947

Questions Cloud

How to calculate the equilibrium concentration of h2 : Suppose at some temperature, Kc= 6.20 X 10^8 for the reaction 2NO(g) + 2H2(g) N2 (g) + 2H2O(g). 5.00 M NO(g) and 5.00 M H2 (g) are placed in a reaction flask. Calculate the equilibrium concentration of H2 (g)
Calculate the stretching force on the second cable : Two stretched cables both experience the same stress. The first cable has a radius of 3.6x10-3 m, and is subject to a stretching force of 270 N. Determine the stretching force on the second cable
Evaluate the percent of sodium carbonate in the mixture : A 25.00mL portion of this solution required 17.56mL of hydrochloric acid(0.1396 mol/L) for complete neutralization. Calculate the percent of sodium carbonate in the mixture.
How to calculate the approximate ph of a solution : Please use the information given regarding molybdic acid. Molybdic acid is diprotic acid with the formula, H2MoO4. The values of Ka1 and Ka2 are approximately 6.3 X 10^-5 and 6.3 X 10 ^-9. Calculate the approximate pH of a 0.750M H2MoO4 solution.
Explain a buffer is prepared by mixing hcl and sodium acetat : A buffer is prepared by mixing 204mL of .452M HCL and .500L of .400M sodium acetat. (a) What is the pH? (b) How many grams of KOH must be added to .500L of the buffer to change the pH by .15 units
Find the water speed in this narrowed portion of the stream : A stream moving with a speed of 0.8 m/s reaches a point where the cross-sectional area of the stream decreases to one-half of the original area
Evaluate the equilibrium concentration of h2 (g) : Suppose at some temperature, Kc= 6.20 X 10^8 for the reaction 2NO(g) + 2H2(g) N2 (g) + 2H2O(g). 5.00 M NO(g) and 5.00 M H2 (g) are placed in a reaction flask. Calculate the equilibrium concentration of H2 (g).
Evaluate the oscillation frequency of the circuit : An L-C circuit containing an 80.0-mH inductor and a 1.55-nF capacitor oscillates with a maximum current of 0.750A. Calculate the oscillation frequency of the circuit
Explain what is the difference of their ph values : If one solution has an H3O+ concentration that is 10 times that of another solution, what is the difference of their pH values

Reviews

Write a Review

Chemistry Questions & Answers

  Explain the pentapeptide leucylglycylthreonyltyrosylalanine

The pentapeptide leucylglycylthreonyltyrosylalanine is first incubated with l-fluoro-2,4-dinitrobenzene (FDNB). When the resulting compound is heated to 110oC for 24 h in the presence of 6 M HCl, the solution will contain

  Compute the boiling point of solution

Compute the boiling point of this solution if  Kf and Kb for H 2 O  are given as 1.86°C/m and 0.512 °C/m , respectively.

  Calculate the partial pressure of the hydrogen gas

Calculate the partial pressure of the hydrogen gas using the atmospheric pressure and the vapor pressure of water at the temperature of the solution. Assuming ideal gas behavior, calculate the number of moles of hydrogen gas evolved.

  The standard heat of formation of standard molar entropy

The standard heat of formation of WO3(s) is -843 KJ/mol, and its standard molar entropy

  Define which reactant is in excess from the reaction

Which reactant is in excess from the reaction of 35.0 g of hydrogen with 276 g of oxygen to form water

  Why does a piece of potato break down a hydrogen peroxide

Why does a piece of potato break down a 100% hydrogen peroxide solution faster than lets say a 75% hydrogen peroxide and 25% water

  Explain how to calculate the ph of the solution

A solution is made by combining 15.0 mL of 18.0 M acetic acid with 5.50 g of sodium acetate and diluting to a total volume of 1.50 L. Calculate the pH of the solution.

  What is the normal boiling point of chlorine dioxide

The vapor pressure of chlorine dioxide (ClO2) is 155 Torr at -22.75 ? C and 485 Torr at 0?C. What is the normal boiling point of chlorine dioxide?

  Explain why lip gloss long lasting containing petroleum

Why is lip gloss long lasting containing petroleum? How many metric tonnes of 5%-S coal would be required to yield the H2SO4 needed to produce a 2.0-cm rainfall of pH 2.00 over an area of 100 square kilometers?

  Water with a mass of 0500 rm kg at 150circ rm c is mixed

water with a mass of 0.500 rm kg at 15.0circ rm c is mixed with 0.800 rm kg of water at 35.0circ rm c. what is the

  Phenol red is an h-indicator the skeleton reaction is what

cacl2 nahco3 phenol red --gt produces a yellow solutionphenol red is an h-indicator. the skeleton reaction ish

  Explain the nacl dissolves in the melted ice

What is the melting point of mixture of 2.00 lb of NaCl and 12.00 lbs of ice if exactly half of the ice melts? Assume that all the NaCl dissolves in the melted ice and that the van' Hoff factor for the resulting solution is 1.44.

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