Science, asked by rakesh2828, 8 months ago

Good Morning Bacchhoo ....

What is the percent yield of lithium hydroxide from a reaction of 7.40g of lithium with 10.2g of water? The actual yield was measured to be 12.1g.​

Answers

Answered by Anonymous
26

\large\red{\underline{{\boxed{\textbf{Brainliest\:Answer}}}}}

\rule{200}{2}

\red{\bold{\underline{{  Answer  \:    with\:  Explanation  \:  :}}}}

\boxed{\bold{Percentage \ Yield = 47.6 \ percent}}

The balanced chemical reaction is

2Li + 2H_{2}O \ \ \ ->  \ \ \ 2LiOH + H_{2}

For the balanced reaction, we've

Lithium = 14 g

Water = 36 g

LiOH = 48 g

Hydrogen gas = 2 g

So,

14 g of lithium = 48 g of lithium hydroxide

And we have:

7.40 g of lithium = x grams of lithium hydroxide

Cross Multiplying,

x grams = \frac{48*7.4}{14}

Grams of lithium = 25.4 g of lithium hydroxide

So, Theoretical Yield = 25.4 g of lithium hydroxide

Now, The %age yield:

%age Yield = \frac{Actual \ Yield}{Theoretical \ Yeild } * 100

%age Yield = \frac{12.1}{25.4} * 100

%age Yield = 47.6%

\rule{200}{2}

\boxed{\bold{\red{Keep\: Asking\: - \: Be \: Brainly}}}\\

Similar questions