Question

Please help

Write a balanced equation for each chemical reactions. Include appropriate symbols. First reactant formula is given.

Hydrochloric acid (HCl) reacts with Zinc to form hydrogen gas and zinc chloride.

2 HCl +


Acetylene gas (C2H2) burns in a welding torch with oxygen to form carbon dioxide gas and water vapor. 2 C2H2 (g) +


c. Silver nitrate plus calcium chloride (CaCll2) yields silver chloride and calcium nitrate. 2 AgNO3 +


d. Oxygen gas combines with hydrogen gas to produce liquid water. O2 +


e. Hydrogen peroxide decomposes into oxygen gas and water when it contacts blood. 2 H2O2

Answer 1

a.
`\mathrm{2HCl_((aq)) + Zn_((s))} \rightarrow \mathrm{H_(2(g)) + ZnCl_(2(aq))}`

b.
`\mathrm{2C_2H_(2(g)) + 5O_(2(g))} \rightarrow \mathrm{4CO_(2(g)) + 2H_2O_((g))}`

c.
`\mathrm{2AgNO3_((aq)) + CaCl_(2(aq))} \rightarrow \mathrm{2AgCl_((s)) + Ca(NO_3)_(2(aq))}`

d.
`\mathrm{O_(2(g))+2H_(2(g))} \rightarrow \mathrm{2H_2O_((\ell))}`

e.
`\mathrm{2H_2O_(2(aq))} \rightarrow \mathrm{O_(2(g)) + 2H_2O_((\ell))}`