Acids, Bases and Salts

What is the effect of an acid on a piece of red litmus paper?

Which of these oxides will react with both hydrochloric acid and sodium hydroxide?

Which of the following compounds will react with hydrochloric acid to produce a salt and water only?

What is the color of methyl orange in a basic solution like sodium hydroxide?

What happens to the $H^{+}$ ion concentration when the pH of a solution is increased from 3 to 4?

Which of these observations is a characteristic of a weak alkali like aqueous ammonia compared to a strong alkali like $NaOH$?

In a titration, $25.0\text{ cm}^{3}$ of $0.10\text{ mol/dm}^{3}$ $NaOH$ is neutralized by $12.5\text{ cm}^{3}$ of sulfuric acid. What is the concentration of the sulfuric acid?

In the reaction between solid $CuO$ and dilute $H_2SO_4$, why is the $CuO$ usually added in excess?

Which species is the conjugate base of the $HSO_4^{-}$ ion?

A $10.0 cm^{3}$ sample of $HCl$ of pH 2.0 is mixed with $990 cm^{3}$ of distilled water. What is the pH of the resulting solution?

Which of the following lists contains only acidic oxides?

Which oxide is most likely to be formed when a Group 17 element reacts with oxygen?

Which oxide is used in the treatment of acidic soil in agriculture?

Which of the following elements forms a basic oxide?

Which element forms an oxide that can be used as a drying agent and reacts violently with water to form a triprotic acid?

Which of the following oxides is a solid with a giant covalent structure and shows acidic properties by reacting with bases?

What salt is formed when $ZnO$ reacts with dilute hydrochloric acid?

A mixture of $Fe_2O_3$ and $ZnO$ can be separated by adding which reagent?

What is the correct classification for $Cl_2O$ and $ClO_2$?

Which of the following oxides is expected to have the most exothermic enthalpy of hydration?

What is the primary reason for using distilled water rather than tap water when washing salt crystals?

Which compound is the source of $NH_4^+$ ions in the preparation of ammonium chloride?

In titration, how do we know the reaction is finished when the acid has neutralized the alkali?

Which salt can be prepared by reacting zinc with dilute sulfuric acid?

Which of the following salts is soluble in water?

If you mix silver nitrate solution with potassium chloride solution, what are the spectator ions in the reaction?

Which salt can be prepared by reacting a carbonate with an acid and then using filtration and crystallization?

To prepare a pure sample of $FeSO_4 \cdot 7H_2O$, which gas should be bubbled through the solution to prevent the formation of $Fe_2(SO_4)_3$ impurities?

In the crystallization of $KNO_3$, the 'mother liquor' refers to:

A student is asked to prepare $CaSO_4$. They have $Ca(NO_3)_2$ and $Na_2SO_4$. What is the name of this preparation method?

What is the expected observation when chlorine gas is tested with damp blue litmus paper?

Which test can distinguish between zinc ions and aluminum ions?

Which ion forms a precipitate that dissolves in excess aqueous ammonia to form a deep blue solution?

What is the color of iron(II) hydroxide precipitate?

A solution contains an unknown anion. When dilute $HCl$ is added, a gas is produced that bleaches damp litmus paper. Which anion is present?

A gas is produced that turns a piece of filter paper soaked in acidified potassium dichromate(VI) from orange to green. What is the gas?

A student has two unlabeled bottles. One contains aluminum ions and the other contains zinc ions. Which reagent will allow the student to distinguish between the two?

A solution contains $Pb^{2+}$ ions. Which observation is correct for its reactions?

A white solid $V$ is heated. It produces a gas that relights a glowing splint and a residue that is yellow when hot and white when cold. What is $V$?

How can you distinguish between $BaCl_2$ and $AlCl_3$ solutions using only one reagent?