DP Chemistry (last assessment 2024)

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Question 17N.3.sl.TZ0.a

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Date November 2017 Marks available [Maximum mark: 1] Reference code 17N.3.sl.TZ0.a
Level sl Paper 3 Time zone TZ0
Command term State Question number a Adapted from N/A
a.
[Maximum mark: 1]
17N.3.sl.TZ0.a

Antacids react with hydrochloric acid in the stomach to relieve indigestion. A student investigated different brands of antacid to see which caused the largest increase in pH in a given time. She added the antacids to hydrochloric acid, and recorded the change in pH over five minutes.

State an equation for the reaction of magnesium hydroxide with hydrochloric acid.

[1]

Markscheme

Mg(OH)2 (s) + 2HCl (aq) → MgCl2 (aq) + 2H2O (l)

Accept full or net ionic equation.

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