MCQ

CH6 - USING MOLES

The equation for the reaction between calcium carbonate and hydrochloric acid is shown. $$\text{CaCO}_3(s) + 2\text{HCl}(aq) \rightarrow \text{CaCl}_2...

2016 Summer

2

MCQ

CH6 - USING MOLES

Which sample contains the greatest number of molecules?

2016 Winter

1

MCQ

CH6 - USING MOLES

Sodium carbonate solution reacts with dilute hydrochloric acid. The equation for the reaction is shown.$Na_2CO_3(aq) + 2HCl(aq) \rightarrow 2NaCl(aq) ...

2016 Winter

2

MCQ

CH6 - USING MOLES

Analysis of a compound formed between magnesium and nitrogen showed it contained 14.4 g of magnesium and 5.6 g of nitrogen. What is the empirical for...

2016 Summer

1

MCQ

CH6 - USING MOLES

An excess of zinc is added to $100 \text{cm}^3$ of $1.0 \text{mol/dm}^3$ hydrochloric acid.The equation for the reaction is:$$\text{Zn} + 2\text{HCl} ...

2016 Summer

1

MCQ

CH6 - USING MOLES

A compound, X, contains 40.0% carbon, 6.7% hydrogen and 53.3% oxygen by mass.The relative molecular mass, $M_r$, of X is 60.What is the molecular form...

2016 Summer

1

MCQ

CH6 - USING MOLES

The equation for the combustion of ethane is shown.$2C_2H_6 + 7O_2 \rightarrow 4CO_2 + 6H_2O$Which volume of carbon dioxide, at room temperature and p...

2018 Summer

2

MCQ

CH6 - USING MOLES

Benzene is a liquid with molecular formula $C_6H_6$.Ethene is a gas with molecular formula $C_2H_4$.Which statement is correct?

2016 Winter

1

MCQ

CH6 - USING MOLES

Sodium hydrogencarbonate undergoes thermal decomposition as shown. $$2\text{NaHCO}_{3} \rightarrow \text{Na}_{2}\text{CO}_{3} + \text{CO}_{2} + \text...

2016 Winter

3

MCQ

CH6 - USING MOLES

A student mixed together 25.0 cm^3 of 1.00 mol/dm^3 hydrochloric acid and 25.0 g of calcium carbonate.$$2HCl(aq) + CaCO_3(s) \rightarrow CaCl_2(aq) + ...

2018 Winter

2

MCQ

CH1 - STATES OF MATTER

The rate of diffusion of two gases, methane, CH₄, and ethene, C₂H₄, is measured using the apparatus shown.Which gas diffuses faster and why?

2016 Summer

3

MCQ

CH2 - SEPARATING SUBSTANCES

A sample of a dye is investigated by chromatography. A line is drawn across a piece of chromatography paper and a spot of the dye is placed on it.The ...

2016 Summer

1

MCQ

CH2 - SEPARATING SUBSTANCES

The paper chromatogram below was obtained from four different dyes.Which dye has an $R_f$ value of 0.7?

2016 Summer

2

MCQ

CH3 - ATOMS AND ELEMENTS

Which statements about isotopes of the same element are correct?1. They are atoms which have the same chemical properties because they have the same n...

2016 Summer

1

MCQ

CH4 - ATOMS COMBINING

The table shows the electronic structure of four atoms.[Table_1]atom | electronic structure---- | ------------------- W | 2,8,1 X | 2,8,4 Y | 2,...

2016 Summer

2

MCQ

CH4 - ATOMS COMBINING

Which statement describes the attractive forces between molecules (intermolecular forces)?

2016 Summer

2

MCQ

CH4 - ATOMS COMBINING

The diagram represents the general structure of a solid Z. What is Z?

2016 Summer

2

MCQ

CH6 - USING MOLES

A compound, X, contains 40.0% carbon, 6.7% hydrogen and 53.3% oxygen by mass.The relative molecular mass, $M_r$, of X is 60.What is the molecular form...

2016 Summer

1

MCQ

CH11 - ACIDS AND BASES

25 cm$^3$ of 0.1 mol/dm$^3$ hydrochloric acid exactly neutralise 20 cm$^3$ of aqueous sodium hydroxide.The equation for this reaction is:NaOH + HCl $\...

2016 Summer

1

MCQ

CH1 - STATES OF MATTER

Which reactions could take place at the anode during electrolysis? 1. $4\text{OH}^-(aq) \rightarrow 2\text{H}_2\text{O}(l) + \text{O}_2(g) + 4e^-$ 2...

2016 Summer

1