DP Chemistry (last assessment 2024)

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Question 17N.3.sl.TZ0.2a

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Date November 2017 Marks available [Maximum mark: 1] Reference code 17N.3.sl.TZ0.2a
Level sl Paper 3 Time zone TZ0
Command term State Question number a Adapted from N/A
a.
[Maximum mark: 1]
17N.3.sl.TZ0.2a

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.

(a)

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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