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Lorico [155]
3 years ago
9

What is the [OH-] in a solution with a pol of 7.86?

Chemistry
1 answer:
yulyashka [42]3 years ago
3 0

Answer:

pH of 7.86, then the [OH-] is equal to 10^(14-7.86) = 10^6.14 M

Explanation:

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_KOH + _H₂PO4 → _K₂PO4 + _H₂O​
Hunter-Best [27]

Answer:

2KOH+H2PO4--K2PO4+4H2O

3 0
3 years ago
Why metal in the middle of metal activity series can't be obtained by heating ors in air​
maxonik [38]

Answer:

See Explanation

Explanation:

The way by which a metal is obtained from its ore is determined by the chemical reactivity of the metal.

Metals that are highly reactive are chiefly obtained by electrolysis of the metal salt. These metals are found high up in the metal activity series.

Metals that are at the middle of the series are moderately reactive and are obtained by electrolysis or by reduction since they still form ionic salts.

Metals that are far lower in the series can only be obtained by heating them in air because they are mostly unreactive.

Hence, moderately reactive metals at the middle of the series are not obtained by roasting in air.

3 0
3 years ago
What is the product of the reaction of hydrobromic acid and 2-bromo-1-butene in the presence of acid and ether?
sergejj [24]

Answer: The major product of the reaction between Hydrobromic Acid and 2-bromo-1-butene in the presence of ether and acid is 2,2-dibromobutane.

Explanation:

The mechanism of the reaction is supported by the Markovnikov's rule which explains that in the addition reaction of alkenes by hydrogen-halogen compounds, the incoming halogen substituent goes to the more substituted Carbon. It can also be stated that incoming hydrogen atom goes to the Carbon with more Hydrogen atoms.

The only case when the reverse of Markovnikov's rule takes place is when Hydrogen peroxide is present and the addition reagent is HBr.

This case is not like that and it simply follows the Markovnikov's rule.

I'll add an attachment of the reaction to this now.

6 0
4 years ago
Read 2 more answers
Why is it important for scientists to review and repeat the work of other scientists
guapka [62]

Answer:

Accuracy

Explanation:

It is important for scientists to review the work of other scientists, so they can be sure there are no mistakes or lack of judgement. They repeat to compare results to make hypotheses.

3 0
3 years ago
What is the mass of 7.2 moles of titanium to the nearest tenth?
Thepotemich [5.8K]

Answer:

7.2 moles of titanium weigh 344.7 grams.

Explanation:

Molar mass of titanium = 47.88 g

1 \: mole \: of \: titanium = 47.88 \: grams \\ 7.2 \: moles \: of \: titanium = g

solve for g

g = ( \frac{7.2 \times 47.88}{1} ) \\ g = 344.7 \: grams

8 0
3 years ago
Read 2 more answers
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