Calcium hydride reacts with a vast excess of water to form calcium hydroxide and hydrogen gas. (See the periodic table.)
(a) Write a balanced chemical equation for the reaction. (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your answer
i have the equation i am just not sure what the states of matter are for them
CaH2(s)+ H2O(l)>>> H2 (g)+Ca(OH)2 (s)
To determine the states of matter for the substances in the chemical equation, we need to refer to the given conditions, which are SATP (Standard Ambient Temperature and Pressure). Under SATP conditions:
- Calcium hydride (CaH2) is a solid.
- Water (H2O) is a liquid.
- Calcium hydroxide (Ca(OH)2) is a solid.
- Hydrogen gas (H2) is a gas.
Now, let's write the balanced chemical equation, including the states of matter:
CaH2 (s) + 2 H2O (l) → Ca(OH)2 (s) + 2 H2 (g)
Please note that the coefficients in the equation represent the stoichiometric ratios of the reactants and products, while the states of matter help provide further information about the physical states of the substances involved in the reaction.