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3 years ago

What solution turns litmus paper red? A. Acidic B. Basic C. Neutral D. None

Chemistry

2 answers:

Aleonysh [2.5K]3 years ago

8 0

A acidic because the lit mass paper didn't turn blue or stay the same color

astra-53 [7]3 years ago

5 0

Answer: The correct answer is Option A.

Explanation:

Litmus paper is defined as the indicator which is used to determine the nature of the solution, whether it is acidic or basic.

Two types of litmus paper are:

Red litmus paper: This paper will turn blue if it is dipped in basic solution and it remains as such if it is dipped in acidic solution.
Blue litmus paper: This paper will turn red if it is dipped in acidic solution and remains as such if it is dipped in basic solution.

When this paper is dipped in neutral solution, the litmus paper (whether it is red or blue) will remain as such.

Hence, the correct answer is Option A.

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3 years ago

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3 years ago

A 44% wt/wt solution of H2SO4 has a density of 1.343g/ml. What mass of H2SO4 is 60ml of this solution?

horsena [70]

Answer: The mass of sulfuric acid present in 60 mL of solution is 34.1 grams

Explanation:

We are given:

44 % (m/m) solution of sulfuric acid. This means that 44 grams of sulfuric acid is present in 100 grams of solution.

To calculate volume of a substance, we use the equation:

$\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}$

Density of solution = 1.343 g/mL

Mass of solution = 100 g

Putting values in above equation, we get:

$1.343g/mL=\frac{100g}{\text{Volume of solution}}\\\\\text{Volume of solution}=\frac{100g}{1.343g/mL}=77.46mL$

To calculate the mass of sulfuric acid present in 60 mL of solution, we use unitary method:

In 77.46 mL of solution, mass of sulfuric acid present is 44 g

So, in 60 mL of solution, mass of sulfuric acid present will be = $\frac{44g}{77.46mL}\times 60mL=34.1g$

Hence, the mass of sulfuric acid present in 60 mL of solution is 34.1 grams

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3 years ago