Question #1a210

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Answer 1 · 2015-01-09T04:55:19

The answer is #"16 mL"#.

In order to solve this problem, you need to use the following equation #"M"_1"V"_1"# = #"M"_2"V"_2"#, in which #"M"# is molarity and #"V"# is volume.

Known/Given:
#"M"_1"# = #"6.0 M HCl"#
#"M"_2"# = #"0.800 M HCl"#
#"V"_2"# = #"120.0 mL"#

Unknown:
#"V"_1"#

Equation:
#"M"_1"V"_1"# = #"M"_2"V"_2"#

Solution: Rearrange the equation to isolate #"V"_1"# and solve for #"V"_1"#.

#"V"_1"# = #"M"_2"V"_2"/M"_1"# = #"0.800 M x 120.0mL"/"6.0 M"# = #"16 mL"#