3 years ago

Indicate the pH value as pH < 7, pH = 7 or PH > 7 for each of the following substances.

Chemistry

1 answer:

Galina-37 [17]3 years ago

5 0

Explanation:

a) PH>7

b)PH=7

c)PH>7

d) PH>7

You might be interested in

How many moles of ScCl3 can be produced when 10.00 mol Sc react with 9.00 mol Cl2

Nuetrik [128]

Answer:

Moles of $ScCl_3$ = 6 moles

Explanation:

The reaction of $Sc$ and $Cl_2$ to make $ScCl_3$ is:

$2Sc+3Cl_2$ ⇒ $2ScCl_3$

The above reaction shows that 2 moles of Sc can react with 3 moles of $Cl_2$ to form $ScCl_3.$

Mole Ratio= 2:3

For 10 moles of Sc we need:

Moles of $Cl_2$ = $Moles of Sc *\frac{3 moles of Cl_2}{2 Moles of Sc}$

Moles of $Cl_2$ = $10 *\frac{3 moles of Cl_2}{2 Moles of Sc}$

Moles of $Cl_2$ =15 moles

So 15 moles of $Cl_2$ are required to react with 10 moles of $Sc$ but we have 9 moles of $Cl_2$ , it means $Cl_2$ is limiting reactant.

$Moles of ScCl_3=Given\ Moles\ of\ Cl_2 *\frac{2\ Moles\ o\ fScCl_3}{3\ Moles\ of\ Cl_2}$

$Moles\ of\ ScCl_3=9 *\frac{2\ Moles\ of\ ScCl_3}{3\ Moles\ of\ Cl_2}$

Moles of ScCl_3= 6 moles

4 0

3 years ago

Read 2 more answers

What describes a change in velocity?

siniylev [52]

Acceleration can be described as changes in speed, changes in direction, or changes in both. Acceleration is a vector.

4 0

3 years ago

Read 2 more answers

An atom of lithium 7 has an equal number of

lukranit [14]

Electrons and protons because they are essentially always the same

5 0

3 years ago

Read 2 more answers

85g=kg?<br> Unit conversion.

Paraphin [41]

Answer:

0.085 kg

Explanation:

1 g=0.001 kg OR 1 kg=1000 g

so $\frac{85}{1000}$ =0.085 kg

3 0

3 years ago

Methane is approximately 23 times more powerful than carbon dioxide as a greenhouse gas. Which are significant sources of methan

ratelena [41]

Answer:

anthropogenic sources like landfills, agricultural activities,coal mining and combustion and some sources are natural ones

5 0

3 years ago