Zadanie 1a
Hydrochloric acid, HCl(aq), and hydroiodic acid, HI(aq), ionize completely in water, whereas propanoic acid, CH3CH2COOH(aq), ionizes only partly. 25.0 cm3 of 0.200 mol dm−3 HCl(aq) was titrated with sodium…
Neutralization reactions and salts
Write balanced equations for reactions of acids with metal oxides, hydroxides, carbonates, hydrogencarbonates, ammonia and amines, name the salt formed, and identify the parent acid and base of a given salt.
Tę umiejętność sprawdzają 24 zadania wzorowane na arkuszach IB z lat 2022–2026.
Zadania sprawdzające tę umiejętność: 24 Otwórz w wyszukiwarce z filtrami
Zadanie 1a
(i) Write a balanced equation for the reaction, including state symbols. (ii) Deduce what property of this reaction makes it possible to follow its rate by both methods. (iii) Magnesium carbonate was used in excess so that all of the acid would react.…
- Materiał graficzny
Zadanie 2c
(c) After 30 minutes, the student stopped heating the mixture and titrated a sample of the solution remaining in the flask with NaOH to determine the experimental yield of propanoic acid. Explain why the titrated sample will give an incorrect value for the…
- Materiał graficzny
Zadanie 24
Which products are formed when sulfuric acid, H2SO4(aq), reacts with solid magnesium carbonate, MgCO3(s)? A. MgSO4(s) and H2CO3(aq) B. MgSO4(aq), H2O(l) and CO2(g) C. MgSO4(s), H2O(l) and…
Zadanie 25
Sulfuric acid reacts with solid copper(II) oxide. Which salt is formed? A. CuSO3 B. CuSO4 C. Cu2SO4 D. H2O
Zadanie 7b
Nitrogen dioxide reacts with rain water and oxygen to form nitric acid. (i) State an equation for this reaction, including state symbols. (ii) Explain, with reference to the oxidation states of two elements, why this is a redox reaction. (iii) Describe the…
Zadanie 26
Which equation correctly represents a reaction of dilute sulfuric acid? A. H2SO4 + MgCO3 → MgSO4 + CO2 + H2O B. H2SO4 + 2 Ag → Ag2SO4 + H2 C. H2SO4 + 2 KOH → K2SO4 + H2 D. H2SO4 + 2 NaHCO3 → Na2SO4 + 2 H2O
Zadanie 2a
(i) In aqueous solution sulfuric acid transfers a proton to a water molecule, forming the hydroxonium ion, H3O+. Annotate the structure of the hydroxonium ion to indicate the coordination bond. (ii) Write an equation for the reaction between excess…
- Materiał graficzny
Zadanie 1b
When sodium hydroxide solution is added to the water, a larger amount of bromine reacts. Explain this observation.
Zadanie 25
Which reactions involve the transfer of a proton? I. H2SO4(aq) + Zn(OH)2(s) → ZnSO4(aq) + 2 H2O(l) II. H2SO4(aq) + ZnCO3(s) → ZnSO4(aq) + H2O(l) + CO2(g) III. H2SO4(aq) + Zn(s) → ZnSO4(aq) + H2(g) A. I and II only B. I and III only C. II…
Zadanie 13b
Diclofenac, an anti-inflammatory drug, is often supplied as its sodium salt, which dissolves in water more readily than the diclofenac molecule itself. Circle the functional group that reacts with sodium hydroxide when this salt is prepared.
- Materiał graficzny
Zadanie 14a
A single dose of an antacid tablet contains 1.850 g of sodium hydrogencarbonate, NaHCO3, and 0.600 g of calcium carbonate, CaCO3. Stomach acid is hydrochloric acid. Mr(NaHCO3) = 84.01 and Mr(CaCO3) = 100.09 Determine the amount of…
Zadanie 16a
A magnesium hydroxide antacid reacts with hydrochloric acid in the stomach. State a balanced equation for this neutralization.
Zadanie 19
Which products form in the reaction between nitric acid and calcium carbonate? A. Ca(NO3)2 + H2O + CO B. CaNO3 + H2O + CO2 C. Ca(NO3)2 + CO2 D. Ca(NO3)2 + H2O + CO2
Zadanie 15a
Some antacid tablets contain aluminium hydroxide. Write an equation for the neutralization reaction between aluminium hydroxide and stomach acid (hydrochloric acid).
Zadanie 5b
Write an equation for the reaction between ethanoic acid and potassium hydroxide.
Zadanie 13a
Calcium carbonate and magnesium hydroxide are two antacids. Write an equation for the reaction of each antacid with excess hydrochloric acid in the stomach. Calcium carbonate: Magnesium hydroxide:
Zadanie 13b
One antacid tablet contains 1.50 g of calcium carbonate and a second tablet contains 1.50 g of magnesium hydroxide. Show by calculation that the tablet of magnesium hydroxide would neutralize more hydrochloric acid than the tablet of calcium carbonate.
Zadanie 18a
Magnesium hydroxide is the active ingredient of some indigestion remedies, which neutralize excess hydrochloric acid in the stomach. (i) Write an equation for the reaction of magnesium hydroxide with hydrochloric acid. (ii) Calculate the mass, in g, of…
Zadanie 19
Which products are formed when dilute hydrochloric acid reacts with solid calcium carbonate? A. Calcium chloride and water B. Calcium chloride, carbon dioxide and water C. Calcium chloride and hydrogen D. Calcium hydroxide and carbon dioxide
Zadanie 19
Which reaction is the neutralization of a Brønsted-Lowry acid by a Brønsted-Lowry base? A. Mg(s) + 2 HCl(aq) → MgCl2(aq) + H2(g) B. 2 Mg(s) + O2(g) → 2 MgO(s) C. CuO(s) + H2SO4(aq) → CuSO4(aq) + H2O(l) D.…
Zadanie 13b
Magnesium hydroxide is used as an antacid to neutralize excess stomach acid, which is hydrochloric acid. Write an equation for the reaction between magnesium hydroxide and hydrochloric acid, including state symbols.
Zadanie 13b
Calcium carbonate is an active ingredient in some antacid tablets. Write an equation, including state symbols, for the reaction of calcium carbonate with the hydrochloric acid in the stomach.
Zadanie 19
Equal volumes of 0.050 mol dm−3 ethanoic acid and 0.050 mol dm−3 hydrochloric acid are each titrated with 0.050 mol dm−3 sodium hydroxide solution. Which quantity is the same for the two titrations? A. Initial pH…