Hydrofluoric acid (hf) can be dissolved in pure water. will the ph of the solution be greater or less than 7? explain.

The pH of Hydrofluoric acid (HF), when dissolved in pure water, would be less than 7.

Explanation:

Hydrofluoric acid is a corrosive acid that is undoubtedly a weak acid. HF not being strong acid is because it does not dissociate in water completely. Also, the chemical bond between  hydrogen and fluorine is a polar covalent bond.

It polar covalent bond  makes this acid pH less than seven because the mixture would lead to the pH level of water to decrease. Hence the  pH 7 is neutral

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

the answer is a) cell division.

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