# Balancing equation

## Quiz by Aji Budiyanto

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10 questions
• Q1
Balance this equation- __P4 + __O2 --> __P2O3
3, 1, 2
1, 2, 3
1, 3, 2
2, 1, 3
45s
• Q2
Balance this equation. _CH4 + _O2 --> _CO2 + _H2O
2,1,2,1
1,2,2,1
1,2,1,2
1,2,1,1
45s
• Q3
Balance this equation. _CF4 + _Br2 -- _CBr4 + _F2
2,2,2,2
1,2,1,2
2,1,2,1
1,2,2,1
45s
• Q4
Balance this equation _N2 + _H2 --> _NH3
2, 1, 3
1, 3, 2
2, 3, 1
1, 2, 3
45s
• Q5
Balance this equation. _Mg + _Cl2 --> _MgCl2
1, 2, 1
1, 1, 1
2, 1, 1
1, 1, 2
45s
• Q6
Balance this equation. _SnO2 +_H2-->_Sn +_H2O
2, 1, 1, 2
2, 1, 2, 1
1, 2, 1, 2
1, 2, 2, 1
45s
• Q7
____Mg + ___ HCl → ____MgCl2 + ____H2
2, 2, 1, 1
1, 2, 1, 1
1, 2, 2, 1
1, 1, 2, 1
45s
• Q8
___PCl5 + ___ H2O → ___ HCl + ____ H3PO4
1, 4, 1, 5
1, 5, 4, 1
1, 1, 4, 5
1, 4, 5, 1
45s
• Q9
Which of the following is an unbalanced equation?
PbO﻿2 ﻿+ 2H﻿2﻿-->2Pb + H﻿2﻿O
2Na+ 2H﻿2﻿O-->2NaOH + H﻿2
CaCO﻿3 ﻿--> CaO + CO﻿2
CS﻿2 ﻿+ 2O﻿2 ﻿--> CO﻿2 ﻿+ 2SO﻿2
45s
• Q10
What coefficient should be used to make the following equation balanced? N﻿2﻿+O﻿2﻿--> ﻿____﻿NO
4
3
1
2
45s

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