Reversible reactions and dynamic equilibrium

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Question 9
Easy

This question is about copper(II) sulfate.

Blue hydrated copper(II) sulfate turns white when it is heated. The word equation for the reaction is: hydrated copper(II) sulfate (blue)⇌anhydrous copper(II) sulfate (white)+water\text{hydrated copper(II) sulfate (blue)} \rightleftharpoons \text{anhydrous copper(II) sulfate (white)} + \text{water}hydrated copper(II) sulfate (blue)⇌anhydrous copper(II) sulfate (white)+water

a.

What does the symbol ⇌\rightleftharpoons⇌ mean?

[1]
b.

A student heats 7.50 g7.50\text{ g}7.50 g of hydrated copper(II) sulfate in a crucible. 2.70 g2.70\text{ g}2.70 g of water is given off as steam. The remaining solid is anhydrous copper(II) sulfate.

Calculate the mass of anhydrous copper(II) sulfate produced.

[2]
c.

A student heats 7.50 g7.50\text{ g}7.50 g of hydrated copper(II) sulfate in a crucible. 2.70 g2.70\text{ g}2.70 g of water is given off as steam. The remaining solid is anhydrous copper(II) sulfate.

Calculate the percentage of water contained in the 7.50 g7.50\text{ g}7.50 g of hydrated copper(II) sulfate.

[2]

Reversible reactions and dynamic equilibrium Questions

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  3. /Reversible reactions and dynamic equilibrium