DP Chemistry Questionbank

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• 18M.3.sl.TZ2.18c: Explain how omeprazole (Prilosec) regulates pH in the stomach.
• 18M.3.sl.TZ2.18b: Calculate the amount, in mol, of stomach acid neutralized by an antacid tablet containing 0.750 g...
• 18M.3.sl.TZ2.18a: Formulate a chemical equation for the neutralization of stomach acid with calcium carbonate.
• 18M.3.sl.TZ1.14b: Explain how omeprazole (Prilosec) reduces stomach acidity.
• 18M.3.sl.TZ1.14a.ii: Determine the amount, in mol, of hydrochloric acid neutralized by one antacid tablet.
• 18M.3.sl.TZ1.14a.i: An antacid tablet contains 680 mg of calcium carbonate, CaCO3, and 80 mg of magnesium carbonate,...
• 17N.3.sl.TZ0.20b: The pH is maintained in different fluids in the body by the use of buffers. Calculate the pH of...
• 17N.3.sl.TZ0.20a: Explain how ranitidine (Zantac) reduces stomach acid production.
• 17M.3.hl.TZ2.22a: Outline how ranitidine (Zantac) functions to reduce stomach acidity.
• 17M.3.sl.TZ2.18a.ii: Deduce the wavenumber of one absorbance seen in the IR spectrum of only one of the compounds,...
• 17M.3.sl.TZ2.18a.i: Compare and contrast the structures of oseltamivir and zanamivir, stating the names of functional...
• 17M.3.sl.TZ2.17b: 0.500 g of solid anhydrous sodium carbonate, Na2CO3(s), is dissolved in 75.0 cm3 of 0.100...
• 17M.3.sl.TZ2.17a: Two drugs are ranitidine (Zantac) and omeprazole (Prilosec). Outline how they function to reduce...
• 17M.3.sl.TZ1.20b: Explain the effect of a large amount of aspirin on the pH of blood.
• 17M.3.sl.TZ1.20a: Calculate the pH of the buffer from the following data and section 1 of the data...
• 16N.3.sl.TZ0.19c: A different approach to treating excess stomach acid is to neutralize it with antacids. Formulate...
• 16N.3.sl.TZ0.19b: Two other drugs, omeprazole (Prilosec) and esomeprazole (Nexium), directly prevent the release of...
• 16N.3.sl.TZ0.19a: Ranitidine (Zantac) is a drug that inhibits stomach acid production. Outline why the development...
• 16M.3.sl.TZ0.18c: Compare and contrast the use of omeprazole (Prilosec) and magnesium hydroxide.
• 16M.3.sl.TZ0.18b: Determine the mass of HCl, in g, that can be neutralized by the standard adult dose of 1.00g...
• 16M.3.sl.TZ0.18a: Formulate the equation for the neutralization of stomach acid with magnesium hydroxide.
• 15M.1.hl.TZ1.29: Which mixture will form a buffer in aqueous solution? A.    ...
• 15M.1.hl.TZ2.27: The ${\text{p}}{K_{\text{a}}}$ of ethanoic acid is 4.8 at 298 K. Which combination will produce...
• 15M.2.hl.TZ1.8d.iii: Determine the pH of the solution resulting when ${\text{100 c}}{{\text{m}}^{\text{3}}}$ of...
• 15M.2.hl.TZ2.4c: Calculate the concentration, in ${\text{mol}}\,{\text{d}}{{\text{m}}^{ - 3}}$, of sodium...
• 14M.2.hl.TZ1.7c.iii: Determine the pH of the buffer solution at 298 K.
• 14M.3.sl.TZ1.12a: State the equations for the reactions of magnesium hydroxide, aluminium hydroxide and calcium...
• 14M.3.sl.TZ1.12b: (i)     one teaspoon (${\text{5.00 c}}{{\text{m}}^{\text{3}}}$) of Maalox® Extra...
• 14M.3.sl.TZ2.10c: One active ingredient in a commercial brand of antacid tablets is a complex of aluminium...
• 14M.3.sl.TZ2.10a: The pH of gastric juice is 1.5. Identify the compound responsible for its acidity and state...
• 14M.3.sl.TZ2.10b: Antacid tablets are often taken for an upset stomach. Identify the reaction involved in this...
• 14N.1.hl.TZ0.28: A buffer solution is formed by mixing equal volumes of...
• 13N.3.sl.TZ0.13a: State an equation for the reactions that occur in the stomach for both substances with...
• 13N.3.sl.TZ0.13b: A typical antacid tablet has a mass of about 1 g. Determine which of the two antacids will...
• 13N.3.sl.TZ0.13c: Potassium hydroxide also neutralizes hydrochloric acid. Suggest why it is not used as an antacid.
• 12N.2.hl.TZ0.3b: Determine the pH of a buffer solution, correct to two decimal places, showing your working,...
• 10N.1.hl.TZ0.26: Which mixtures act as buffer solutions? I.    ...
• 10N.3.sl.TZ0.D1a: State the name of the acid found in the gastric juices of the stomach.
• 10N.3.sl.TZ0.D1b: Two examples of antacids are aluminium hydroxide and calcium carbonate. State the equations to...
• 10M.2.hl.TZ1.3f: (if acid added)...
• 10M.3.sl.TZ1.D3a: (i)     Give the equations for the reactions of sodium hydrogencarbonate and magnesium hydroxide...
• 10M.2.hl.TZ2.7b: (i)     Deduce the acid and conjugate base ions that make up the phosphate buffer and state the...
• 09M.3.sl.TZ2.D2b: Calcium carbonate can also neutralize stomach acid. The same amounts (in moles) of sodium...
• 09M.3.sl.TZ2.D2a: State an equation for the reaction of stomach acid with this antacid.
• 11M.3.sl.TZ1.D2b: State and explain whether 0.1 mol of magnesium hydroxide is more effective or less effective than...
• 11M.3.sl.TZ1.D2c: Suggest why compounds such as sodium hydroxide or potassium hydroxide cannot be used as an antacid.
• 11M.3.sl.TZ1.D2a: State an equation to represent a neutralization reaction with one of the above antacids.
• 12M.3.hl.TZ2.D3c: Describe what happens to bacteria when they come into contact with penicillin.
• 12M.3.hl.TZ2.D3d: (i)     Identify the $\beta$-lactam ring by drawing a circle around it. (ii)     Explain why...
• 12M.3.sl.TZ2.D1a: State the separate equations for the reactions of aluminium hydroxide and magnesium carbonate...
• 12M.3.sl.TZ2.D1b: Determine which of the two components of the tablet will neutralize the most acid.
• 12M.3.sl.TZ2.D1d: On the leaflet which comes with the tablets it states that one of the side effects of the tablets...