A level Chemistry Mixed 1
Authored by Shahid Hussain
Chemistry
12th Grade
Used 60+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What pH is the solution formed after sodium reacts with water?
pH 13-14
pH 10-11
pH 7-9
pH 1-3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the correct balanced equation for magnesium reacting with steam, including state symbols?
Mg(s) + H2O(g) → MgO(s) + H2(s)
Mg(s) + H2O(g) → MgO(s) + H2(g)
Mg(l) + H2O(g) → MgO(s) + H2(g)
Mg(s) + H2O(g) → MgO(s) + H2O(g)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the name of the mechanism for the reduction of carbonyls?
Nucleophilic Substitution
Nucleophilic addition
Nucleophilic addition-elimination
Electrophillic addition
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is the correct balanced redox half equation for the oxidation of iron(ii) to iron(iii)?
Fe3+ ------> Fe2+ + e¯
Fe2+ +e- ------> Fe3+
Fe2+ ------> Fe3+ + 3e¯
Fe2+ ------> Fe3+ + e¯
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the general formula for the acid dissociation constant?
Kc= [H+][A-]/ [HA]
Ka= [H+][A-]/ [HA]
Ka= [HA]/[H+][A-]
Ka= [H+][A-] x [HA]
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Calculate the pH of the following weak acid: 0.200 mol dm-3 butanoic acid (Ka = 1.51 x 10-5 mol dm-3)
2.70
4.48
2.76
6.34
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the typical equivalence point of a strong acid weak base titration?
5
3
2
4
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