General Chemistry Questions

Water at 25 °C is saturated with ​hydrogen sulfide​ gas at a pressure of ​0.743​ atm.

In the resulting aqueous solution, ​water​ would be called the _________solute solvent and ​hydrogen sulfide​ would be called the _________solute solvent.

 

A homogeneous mixture is made by dissolving ​4.48​ grams of solid ​sodium cyanide​ in 1000 g of water.

This is an example of a _________solid solutionliquid solutioncolloidal suspension.

In the mixture, ​sodium cyanide​ would be called the _________solute solvent and ​water​ would be called the _________solute solvent.

 

The liquid propyl alcohol and water dissolve in each other in all proportions.

According to usual practice, in a solution containing ​975​ mL of propyl alcohol and ​15​ mL of water, water would be called the _________solutesolvent.

 

The solubility of ​lead chloride​ in water is 4.50​ ​ grams per liter.

If a ​lead chloride​ solution had a concentration of ​4.50​ grams per liter, it would be said to be _________saturatedsupersaturatedunsaturated.

 

The solubility of ​magnesium carbonate​ in water is ​0.533​ grams per liter.

If a ​magnesium carbonate​ solution had a concentration of ​1.81×10-3 grams per liter, it would be said to be relatively _________concentrated dilute.

 

 

The liquid dibenzyl ether is insoluble in water.

The liquid ​dibenzyl ether​ and water are said to be _________miscible immiscible partially miscible.

 

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When a solid solute is dissolving in a liquid to form a saturated solution, the rate of crystallization when the solution is 2/3 saturated is higher than the rate of crystallization when the solution is 1/3 saturated._______truefalse (true or false)

 

The solubility of a gas in a liquid increases as the partial pressure of that gas over the surface of the liquid increases._______truefalse (true or false)

 

A finely divided solid will form a saturated solution in a liquid more rapidly than a coarsely divided one. (true or false)

 

How many grams of KBr​ are there in ​ 205​ grams of an aqueous solution that is ​ 14.3​ % by weight​ KBr._______ g ​ KBr

 

 

If 23.4 grams of an aqueous solution of manganese(II) acetate, Mn(CH​3COO)​2, contains 6.04 grams

​ ​ of manganese(II) acetate, what is the percentage by mass of manganese(II) acetate in the

solution?_______ % Mn(CH​3COO)

You wish to prepare 201 grams of 11.3 % K​2SO​ ​4.​

You will need ____grams of potassium sulfate and ___mL of water. Assume that the density of water is 1.00 g / ml.

 

 

A student weighs out a 2.72 g sample of , transfers it to a 125 mL volumetric flask, adds enough water to dissolve it and then adds water to the 125 mL tick mark.

What is the molarity of potassium bromide in the resulting solution? Molarity = ______ M

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How many mL of a 0.228 M aqueous solution of manganese(II) acetate, Mn(CH3COO)2 , must be taken to obtain 11.3 grams of the salt?____ mL

How many grams of ​potassium sulfate​,K2SO4, must be dissolved to prepare ​300.​ mL of a ​0.133​ M aqueous solution of the salt?_______ g

In the laboratory, a student dilutes ​11.4​ mL of a ​11.0​ M ​hydrochloric acid​ solution to a total volume of ​300.0​ mL. What is the concentration of the diluted solution? Concentration = _____M

How many milliliters of ​6.60​ M ​hydroiodic acid​ solution should be used to prepare ​3.00​ L of ​0.600 M HI? _____- mL

In the laboratory, a student adds ​57.2​ mL of water to ​23.9​ mL of a ​0.617​ M ​hydrobromic acid solution. What is the concentration of the diluted solution? Assume the volumes are additive. Concentration = ____M

How many grams of ​Cu(OH)2 will precipitate when excess NaOH​ solution is added to ​61.0​ mL of

0.697​ M ​CuSO4 solution?_____ g​

How many mL of ​0.604​ M ​HI​ are needed to neutralize ​5.35​ g of ​BaCO3?_____ mL

Calculate the number of milliters of ​0.517​ M ​KOH​ required to precipitate as ​Mg(OH)2 all of the Mg2+ ions in ​190​ mL of ​0.656​ M ​MgSO4 solution._____ mL ​ ​KOH

 

Oxalic acid dihydrate is a solid, diprotic acid that can be used in the laboratory as a primary standard.

Its formula is H​2C​ ​2O​ ​4•2H​ ​2O. A student dissolves 0.669 grams of H​ ​2C​ 2​O​ ​4​•2H 2​ O in water and titrates​ the resulting solution with a solution of potassium hydroxide of unknown concentration. If 29.7 mL of the potassium hydroxide solution are required to neutralize the acid, what is the molarity of the potassium hydroxide solution?_______ M

 

Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory as a​ primary standard. It has the unwieldy formula of ​ KHC​ ​8H4O4. This is often written in shorthand

​ ​ ​

notation as KHP​ . If ​ 36.6​ mL of a ​ barium hydroxide​ solution are needed to neutralize ​ 2.03​ grams of​ KHP, what is the molarity of the barium hydroxide​ ​ solution?_____ M

 

Oxalic acid dihydrate is a solid, diprotic acid that can be used in the laboratory as a primary

standard. Its formula is H2C2O4•2H2O.

​ ​ ​ ​

A student dissolves 0.748 grams of H2C2O4•2H2O in water and titrates the resulting solution

​ ​ ​ ​

with a solution of potassium hydroxide of unknown concentration. If 22.0 mL of the potassium hydroxide solution are required to neutralize the acid, what is the molarity of the potassium hydroxide solution?______ M

 

The molarity of an aqueous solution of sodium hydroxide is determined by titration against a 0.238 M perchloric acid solution. If 34.0 mL of the base are required to neutralize 19.7 mL of perchloric acid, what is the molarity of the sodium hydroxide solution?______M

The molarity of an aqueous solution of hydrochloric acid is determined by titration with a 9.75×10-2 M barium hydroxide solution. If 32.6 mL of barium hydroxide are required to neutralize 26.6 mL of the acid, what is the molarity of the hydrochloric acid solution?_____M

The molarity of an aqueous solution of potassium hydroxide is determined by titration against a 0.180 M hydroiodic acid solution. If 29.4 mL of the base are required to neutralize 12.0 mL of hydroiodic acid, what is the molarity of the potassium hydroxide solution?______M

 

 

 

 

 

 

 

 

 

 

 

 

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