Chemical Reactions & Balancing Chemical Reactions

The reaction equation is known:

2 Al(s) + 6 HCl(aq) --> 2 AlCl₃(aq) + 3 H₂(g)

From the above reaction equation, which is the reactant is ....

• Al and H₂

• HCl and AlCl₃

• Al and HCl

• Al and AlCl₃

• AlCl₃ and H₂

Al(OH)₃ + H₂SO₄ → Al₂(SO₄) ₃ + H₂O. The coefficient of the reaction equation is ...

• 1, 2, 3, 6

• 2, 3, 1, 6

• 1, 3, 2, 6

• 3, 2, 1, 6

• 3, 1, 2, 6

The coefficients of the reaction MnO₂ + HCl → MnCl₂ + H₂O + Cl₂ respectively from left to right are ...

• 1, 2, 4, 2, 1

• 1, 2, 2, 2, 1

• 1, 4, 1, 2, 1

• 2, 1, 4, 2, 1

• 2, 4, 2, 4, 1

Pada satu persamaan reaksi, zat-zat yang berbeda disebelah kanan anak panah disebut…

• zat pereaksi

• zat reaktan

• Zat yang di reaksikan

• zat dalam reaksi

• zat hasil reaksi

Pada sebuah persamaan reaksi kimia, zat-zat yang ditulis di sebelah kanan tanda panah dinamakan ….

• reaktan

• antara

• elementer

• produk

• pereaksi

aMgCl₂ + bAl₂(SO₄)₃ → c MgSO₄ + d AlCl₃ is can be balanced chemical reaction if the values of a, b, c and d are....

• 3, 1, 3 and 2

• 2, 1, 3 and 2

• 1, 2, 3 and 3

• 2, 2, 3 and 2

The following equation shows the breakdown of heated lead(II) nitrate.

xPb(NO₃)₂ → yPbO + zNO₂ + O₂. The value of x,y,z is...

• 2, 3, 4

• 2, 2, 4

• 1, 1, 2

• 1, 2, 2

• 1, 2, 1

Dalam persamaan reaksi kimia, suatu senyawa yang berbentuk gas dilambangkan dengan huruf ….

• s

• g

• l

• aq

• gs

• Mg

• HBr

pCa(OH)₂ + qH₃PO₄ → Ca₃(PO₄)₂ + rH₂O is can be balanced reaction if the values of p, q, and r are...

• 2, 2, 4

• 3, 2, 4

• 2, 3, 4

• 2, 3, 6

• 3, 2, 6