# STOICHIOMETRY (2)

## Quiz by Aji Budiyanto

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11 questions
• Q1
2 moles of hydrogen reacts to oxygen to produce water (reaction: 2H2 + O2 --> 2H2O) what is the mole of Oxygen needed for completing the reaction
2 moles
1 mole
0.2 moles
0.1 moles
60s
• Q2
4 moles of hydrogen reacts to oxygen to produce water (reaction: 2H2 + O2 --> 2H2O) what is the mass of water produced in the reaction? (Mr H2O = 18 gr/mole)
18 grams
72 grams
32 grams
36 grams
60s
• Q3
2 grams of hydrogen reacts to oxygen to produce water (reaction: 2H2 + O2 --> 2H2O) what is the volume of oxygen produced at RTP? (Mr H2O = 18 gr/mole)
48 liters
22.4 liters
44.8 liters
24 liters
60s
• Q4
6 moles of hydrogen reacts to Nitrogen to produce ammonia (reaction: 3H2 + N2 --> 2NH3) what is the mass of nitrogen needed in the reaction? (Ar N2 = 28 grams/mole; Mr NH3 = 17 grams/mole)
34 grams
56 grams
28 grams
17 grams
60s
• Q5
36 liters of hydrogen reacts to Nitrogen to produce ammonia (reaction: 3H2 + N2 --> 2NH3) what is the volume of NH3 produced at RTP? (Ar N2 = 18 grams/mole; Mr NH3 = 17 grams/mole)
24 liters
12 liters
72 liters
48 liters
60s
• Q6
36 liters of hydrogen reacts to Nitrogen to produce ammonia (reaction: 3H2 + N2 --> 2NH3) what is the mass of nitrogen needed at RTP? (Ar N2 = 28 grams/mole; Mr NH3 = 17 grams/mole)
21 grams
7 grams
28 grams
14 grams
60s
• Q7
H2 + Cl2 --> 2 HCl, if in that reaction 2 grams of hydrogen are needed in the reaction what is the mass of HCl produced? (Mr HCl = 36.5)
3.65 grams
7.3 grams
36.5 grams
73 grams
60s
• Q8
H2 + Cl2 --> 2 HCl, if in that reaction 2 moles of hydrogen are needed in the reaction what is the volume of Cl2 needed at STP? (MrCl2 = 35.5; HCl = 36.5)
48 liters
44.8 liters
24 liters
22.4 liters
60s
• Q9
H2 + Cl2 --> 2 HCl, if in that reaction 24 liters of hydrogen are needed in the reaction what is the volume of HCl produced at RTP? (MrCl2 = 35.5; HCl = 36.5)
24 liters
22.4 liters
44.8 liters
48 liters
60s
• Q10
20 grams NaOH reacts to 2 liters of HCl to produce NaCl and water as : NaOH + HCl --> NaCl + H2O, what is the molarity of NaCl? (Mr NaOH = 40, NaCl =58.5, HCl = 36.5, H2O = 18 gr/mole)
0.25 M
0.5 M
2 M
1 M
60s
• Q11
4 grams NaOH reacts to HCl to produce NaCl and water as : NaOH + HCl --> NaCl + H2O, what is the mass of NaCl? (Mr NaOH = 40, NaCl =58.5, HCl = 36.5, H2O = 18 gr/mole)
5.85 grams
2.925 grams
29.25 grams
0.585 grams
60s

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