Question

The balanced chemical reaction in this lab as follows:

Mg _(s) + 2 HCl _(aq) à MgCl_{2 (aq)} + H_{2 (g)}

		The products formed are aqueous magnesium chloride and hydrogen gas.
		The products formed are hydrochloric acid and magnesium chloride.
		The products formed are magnesium metal and hydrochloric acid.
		The products formed are magnesium metal and hydrogen gas.

The combine gas law is as follows:

What happens to the volume of an ideal gas if you double its temperature at a fixed pressure?

		Double the volume
		Quarter the volume
		Halve the volume
		Quadruple the volume

The standard molar volume (V_MOLAR) of a gas is the volume occupied by one mole of the gas at standard conditions of temperature and pressure (STP). At Standard Temperature (T):

		25 °C which is equal to 298.15 K.
		0 °C which is equal to 273.15 K.
		0 °C which is equal to 0 K.
		25 °C which is equal to 273.15 K.

Which of the following statements is true.

		Magnesium is in Group VIIA of the periodic table and forms the Mg2+ anion in solution.
		Magnesium is in Group VIIA of the periodic table and forms the Mg2+ cation in solution.
		Magnesium is in Group IIA of the periodic table and forms the Mg2+ cation in solution.
		Magnesium is in Group IIA of the periodic table and forms the Mg2+ anion in solution.

Answer 1

The balanced chemical reaction in this lab as follows:

1. Mg (s) + 2 HCl (aq)--------> MgCl2 (aq) + H2 (g)

The products formed are aqueous magnesium chloride and hydrogen gas.

2. From gas laws, P1V1/T1 = P2V2/T2

At constant pressure, volume of a gas directly proportional to absolute temperature.

therefore, if temperature becomes doubled, volume also becomes doubled.

3. The standard molar volume (VMOLAR) of a gas is the volume occupied by one mole of the gas at standard conditions of temperature and pressure (STP). At Standard Temperature (T): 0 °C which is equal to 273.15 K.

4. Magnesium is in Group IIA of the periodic table and forms the Mg2+ cation in solution.

All the metals form cations by the loss of electrons