MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Which equations are balanced?1 $ \quad \text{Fe}_{2}\text{O}_{3} + 3\text{CO} \rightarrow 2\text{Fe} + 3\text{CO}_{2} $2 $ \quad \text{ZnCO}_{3} + 2\t...

2017 Summer

2

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Calcium carbide, CaC_2, reacts with water to form ethyne, C_2H_2, and calcium hydroxide. The equation for the reaction is shown.CaC_2(s) + 2H_2O(l) \r...

2017 Summer

1

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

A sample of 16.0g of a metal oxide, MO, is reduced to 12.8g of the metal, M.What is the relative atomic mass, $A_r$, of M?

2016 Summer

2

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

The equation for the reaction between phosphorus and oxygen is shown.$$xP_4 + yO_2 \rightarrow zP_2O_5$$Which values of x, y and z balance the equatio...

2017 Winter

2

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

The relative molecular mass of an alcohol is 88. Its percentage composition by mass is: C, 54.5%; H, 9.1%; O, 36.4%. Which row shows the empirical f...

2017 Winter

3

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Aqueous iron(III) sulfate and aqueous sodium hydroxide react to give a precipitate of iron(III) hydroxide and a solution of sodium sulfate. What is th...

2017 Summer

1

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

The equation for the reaction between sodium carbonate and dilute hydrochloric acid is shown.\[ \text{Na}_2\text{CO}_3 + 2\text{HCl} \rightarrow 2\tex...

2017 Summer

2

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

The equation shows the complete combustion of propane.C$_3$H$_8$(g) + 5O$_2$(g) → 3CO$_2$(g) + 4H$_2$O(l)Which statement is correct?

2016 Winter

2

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

The equation represents the reaction between solid magnesium oxide and dilute hydrochloric acid to form magnesium chloride and water.$$\text{MgO} + 2\...

2017 Winter

2

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

A compound contains 34.5% calcium, 24.1% silicon and 41.4% oxygen by mass.What is its empirical formula?

2017 Winter

2

MCQ

CH1 - STATES OF MATTER

Which statement explains why ammonia gas, $\text{NH}_3$, diffuses at a faster rate than hydrogen chloride gas, $\text{HCl}$?

2019 Summer

2

MCQ

CH2 - SEPARATING SUBSTANCES

2.00 g of powdered calcium carbonate is added to 50.0 cm$^3$ of hydrochloric acid. Which apparatus is used to measure the calcium carbonate and the h...

2019 Summer

3

MCQ

CH2 - SEPARATING SUBSTANCES

The measurements from a chromatography experiment using substance F are shown. The diagram is not drawn to scale.What is the $R_f$ value of F?

2019 Summer

2

MCQ

CH3 - ATOMS AND ELEMENTS

Which statement about an atom of fluorine, $^{19}_{9}\text{F}$, is correct?

2019 Summer

2

MCQ

CH4 - ATOMS COMBINING

Which row describes the formation of single covalent bonds in methane?

2019 Summer

2

MCQ

CH4 - ATOMS COMBINING

Which statement describes the structure of an ionic compound?

2019 Summer

2

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Propane burns in oxygen. $\text{C}_3\text{H}_8 + x\text{O}_2 \rightarrow 3\text{CO}_2 + y\text{H}_2\text{O}$Which values of $x$ and $y$ balance the eq...

2019 Summer

2

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

A tablet contains 0.080g of ascorbic acid ($M_r = 176$).What is the concentration of ascorbic acid when one tablet is dissolved in 200 cm$^3$ of water...

2019 Summer

2

MCQ

CH1 - STATES OF MATTER

Which statement about the electrolysis of copper(II) sulfate solution using carbon electrodes is correct?

2019 Summer

1

MCQ

CH1 - STATES OF MATTER

Aluminium metal is extracted from aluminium oxide by electrolysis. Which ionic half-equation describes a reaction that occurs at the named electrode?...

2019 Summer

2