DP Chemistry (last assessment 2024)

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Question 22M.2.sl.TZ2.b(i)

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Date May 2022 Marks available [Maximum mark: 2] Reference code 22M.2.sl.TZ2.b(i)
Level sl Paper 2 Time zone TZ2
Command term Calculate Question number b(i) Adapted from N/A
b(i).
[Maximum mark: 2]
22M.2.sl.TZ2.b(i)

Lithium reacts with water to form an alkaline solution.

A 0.200 g piece of lithium was placed in 500.0 cm3 of water.

Calculate the molar concentration of the resulting solution of lithium hydroxide.

[2]

Markscheme

nLi«0200g6.94g=»0.0288«mol»

«nLiOH = nLi»

LiOH «=0.0288mol0.5000dm3=»0.0576 «moldm-3» ✔

 

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