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O level Stoichiometry

Stoichiometry Questions and Answers (Page 3)
O level Chemistry Notes

Stoichiometry Questions and Answers (Page 3)

Stoichiometry questions and answers (Page 3) Question 1 Copper reacts with concentrated nitric acid as shown by the equation below: Cu(s) + 4HNO3(aq) → Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l) Suggest one observation made when copper reacts with concentrated nitric acid. (i) Suggest the name of the salt of formula Cu(NO3)2.(ii) Read more…

By Sydney Chako, 1 yearFebruary 20, 2021 ago
Acids, Bases and Salts Questions (Page 1)
Combined Science Revision

Acids, Bases and Salts Questions (Page 1)

Acids, Bases and Salts Questions and Answers (Page 1) Question 1 Dry hydrogen chloride gas does not turn blue litmus paper red. It dissolves in water and toluene. Some properties of the two solutions are listed below: HCl in toluene HCl in water Nuetral to litmus Turns litmus paper red Read more…

By Juliet Muturuki, 2 yearsJune 14, 2020 ago
Stoichiometry Questions and Answers (Page 2)
O level Chemistry Notes Updates

Stoichiometry Questions and Answers (Page 2)

Stoichiometry Questions and Answers(Page 2) Question 1 Sodium sulphate has the following composition by mass: sodium 32.4%, sulphur 22.5% and oxygen 45.1%. What is its empirical formula? Solution 1 Sodium Sulphur Oxygen Mass 32.4 22.5 45.1 Moles 32.4/23 22.5/32 45.1/16 = 1.41 = 0.7 = 2.82 Molar Ratio 1.41/0.7 0.7/0.7 Read more…

By Sydney Chako, 2 yearsJune 6, 2020 ago
Stoichiometry Questions and Answers(Page 1)
O level Chemistry Notes Updates

Stoichiometry Questions and Answers(Page 1)

Stoichiometry Questions and Answers (Page 1) Use the values of Ar which follow to answer the questions below. [H = 1; C = 12; N = 14; O = 16; Ne = 20; Na = 23; Mg = 24; S = 32; K = 39; Fe = 56; Cu = Read more…

By Sydney Chako, 2 yearsJune 6, 2020 ago
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