User Account

All Pages

A buffer solution is made by dissolving 045 moles of a

Assignment Help Chemistry
Reference no: EM13344555

A buffer solution is made by dissolving 0.45 moles of a weak acid (HA) and 0.33 moles of KOH into 800 mL of solution. What is the pH of this buffer? Ka = 5.9 × 10-6 for HA.

Reference no: EM13344555

Questions Cloud

Ethylene glycol antifreeze has a density of 111 gcm3 what : ethylene glycol antifreeze has a density of 1.11 gcm3.a. what is the mass in grams of 410 ml of ethylene glycol?b. what
A 05118 gram sample of caco3 is dissolved in 6 moles of hcl : a 0.5118 gram sample of caco3 is dissolved in 6 moles of hcl and the resulting solution is diluted to 250.0 ml in a
The forward-bias current in a gaas pn-junction at t 300 k : the forward-bias current in a gaas pn-junction at t 300 k is id 15 ma. the reverse-saturation current is is 10-19 a.
A 2 l bottle of a carbonated beverage coke at 20 degc is : a 2 l bottle of a carbonated beverage coke at 20 degc is placed in a cooler with 10 l of saturated liquid water and 30
A buffer solution is made by dissolving 045 moles of a : a buffer solution is made by dissolving 0.45 moles of a weak acid ha and 0.33 moles of koh into 800 ml of solution.
A certain monoprotic weak acid with ka 68 times 10-7 can : a certain monoprotic weak acid with ka 6.8 times 10-7 can be used in various industrial processes but is no longer
A sealed flask contains 065 g of water at 28 circ rmc the : a sealed flask contains 0.65 g of water at 28 circ rmc. the vapor pressure of water at this temperature is 28.36 rm
You have researched a new type of switch and proved that : you have researched a new type of switch and proved that upgrading your switches to this model is feasible. what step
A bright orange ceramic fiestaware plate is found to have : a bright orange ceramic fiestaware plate is found to have an activity of 12.49 disintegrations per second becquerels or

Reviews

Write a Review

Chemistry Questions & Answers

  Calculate the mass of propylene glycol that must be added

calculate the mass of propylene glycol that must be added to 0.340 of water to reduce the vapor pressure by 2.86 at 40

  Explain what volume of hcl is required to dissolve

A sample of cadmium with mass 2.248g is dissolved in 3.00M HCl. What volume of HCl is required to dissolve the Cd. (Cd dissolves in HCl to form Cd^2+)

  Explain the freezing point of pure benzene

What is the molar mass of a nonpolar molecular compound if 5.52 grams dissolved in 36.0 grams of benzene begins to freeze at -1.87 °C? The freezing point of pure benzene is 5.50 °C and the freezing point depression constant, Kfp, is -5.12 °C/m.

  Explain what is the mass percent of alcohol in the blood

If 32.36 mL of 0.05984 M Cr2O72- is required to titrate 27.91 g plasma, what is the mass percent of alcohol in the blood?

  Explain acetic acid and sodium acetate

how would you make 100ml of a buffer with a pH =4.25, starting with 0.25 M acetic acid and 0.25M sodium acetate

  How many kilograms of sodium carbonate must be added

Sodium carbonate ( Na_2CO_3) is used to neutralize the sulfuric acid spill. How many kilograms of sodium carbonate must be added to neutralize 5.04×103 kg of sulfuric acid solution?

  Explain the molar enthalpy of vaporization of the liquid

Suppose that 150.2 J of heat energy is required to completely vaporize 5 g of a pure liquid. If the molar mass of the liquid is 95.64 g/mol, what is the molar enthalpy of vaporization of the liquid

  Determine the rate constant

The reaction 2NOCl(g) → 2NO(g) + Cl2 (g) has an activation energy of 100.0 kJ/mol and a rate constant at 400.0 K of 8.5 x 10-6 mol-1 L s-1. Determine the rate constant at 450 K.

  How many moles of gas were added

A gas bottle contains .65 mol of gas at 730 Hg pressure. If the final pressure is 1.15 atm, how many moles of gas were added to the bottle?

  Explain what mass (in g) of the excess reactant is left

Elemental phosphorus reacts with chlorine gas according to the equation: P4 (s)+ 6Cl2 (g) --> 4PCl3 (l) A reaction mixture initially contains 45.11 g P4 and 132.0g Cl2. Once the reaction has occurred as completely as possible, what mass (in g) of ..

  Calculate the final temperature of the mixture

A 26.0-g sample of ice at -11.0°C is mixed with 123.0 g of water at 90.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.

  Explain hydrocarbons are often reacted with steam to form h2

Hydrocarbons are often reacted with steam to form H2, as shown for propane- C3H8(g) + 6 H2O(g) 3 CO2(g) + 10 H2(g) Calculate Kp for this reaction at a particular temperature

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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