For each of the following equations, write the chemical...

For each of the following equations, write the chemical formulas and balance the equation. Try to indicate all the physical states (solid, liquid, gas) as well. (a) potassium + water $\rightarrow$ potassium hydroxide $+_{-}$ hydrogen (b) potassium hydride $+$ water $\rightarrow$ potassium hydroxide + hydrogen (c) silicon dioxide $+$ carbon $\rightarrow$ silicon carbide $+$ carbon monoxide (d) silicon dioxide + hydrogen fluoride $\rightarrow$ silicon tetrafluoride $+$ water (e) phosphorus + chlorine $\rightarrow$ phosphorus trichloride

For each of the following equations, write the chemical formulas and balance the equation. Try to indicate all the physical states (solid, liquid, gas) as well.
(a) potassium + water $\rightarrow$ potassium hydroxide $+_{-}$ hydrogen
(b) potassium hydride $+$ water $\rightarrow$ potassium hydroxide + hydrogen
(c) silicon dioxide $+$ carbon $\rightarrow$ silicon carbide $+$ carbon monoxide
(d) silicon dioxide + hydrogen fluoride $\rightarrow$ silicon tetrafluoride $+$ water
(e) phosphorus + chlorine $\rightarrow$ phosphorus trichloride

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Key Concepts

Chemical Formulas

Chemical formulas represent the types and numbers of atoms in a compound by using element symbols and numerical subscripts. They provide a concise way to express compounds in chemical equations and are essential for understanding the composition of reactants and products in a reaction.

Balancing Chemical Equations

Balancing chemical equations involves adjusting the coefficients in front of reactants and products to ensure that the same number of each type of atom appears on both sides of the equation, in accordance with the law of conservation of mass. This process is crucial for accurate stoichiometric calculations and understanding the quantitative relationships in chemical reactions.

Physical State Indicators

Physical state indicators are annotations used in chemical equations to denote the state of each substance involved in the reaction. The common symbols are (s) for solids, (l) for liquids, (g) for gases, and (aq) for aqueous solutions. These indicators help provide information about the reaction conditions and the nature of the substances participating in the reaction.

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